Y Combinator

Typewise AG, founded in 2019 and based in Binningen, Switzerland, develops an innovative keyboard app for iOS and Android that enhances the typing experience. The app features a unique hexagonal layout designed for two-thumb typing, smart autocorrection, and predictive text capabilities, supporting over 30 languages and accommodating simultaneous multilingual use. It includes a custom dictionary that adapts to users' input languages and offers specialized support for Hinglish, catering to Indian users. Typewise prioritizes user privacy by utilizing private algorithms that function offline. The app has gained significant traction, with over 800,000 downloads and 200,000 active users, and has received several accolades, including recognition at the Swiss AI Awards and the Best of Swiss App Awards. Typewise aims to simplify communication by reducing typing frustration and improving both speed and accuracy in written interactions.

Sribuu is an Indonesia-based personal financial application aimed at enhancing users' financial literacy and management skills. The app provides tools for recording and analyzing spending by automatically tracking transactions from major banks and e-wallet services. This functionality helps users monitor their income and expenses more effectively. By offering personalized recommendations based on individual financial habits, Sribuu empowers users to make informed financial decisions and develop better money management strategies.

Pandai is an educational application aimed at enhancing students' academic performance through personalized learning experiences. The app offers a variety of curriculum-based resources, including daily quizzes, tests, exams, and instructional videos. By providing gamified quizzes that align with specific school curricula, Pandai facilitates effective learning and practice. The platform allows students to receive feedback and identify their weaknesses, ultimately helping them to improve their grades and understanding of various subjects.

ClipDrop is an app that turns regular mobile photos into professional product visuals.

OneKey develops a mobile keyboard to schedule, access CRM, and add todos — in any app. OneKey allows users to work faster on mobile than anyone, schedule, add todos, and more, without switching apps, nor messaging back-and-forth.

ManyCore Corporation writes binary code for Android applications for optimizing the usage of smart phone processors. The company was founded in 2016 and is headquartered in San Francisco, California.

Bamboo is a digital investment platform based in Lagos, Nigeria, that allows users to buy, hold, or sell stocks listed on the United States and Nigerian stock markets. The platform offers real-time access to stock trading through a mobile application and web interface, making it convenient for users to manage their investments from various devices. By focusing on user-friendly technology, Bamboo aims to simplify the investment process for individuals looking to participate in global financial markets.

Draftbit is a new way to build cross-platform, native iOS and Android apps in minutes instead of months. Whether you're a designer or developer, with Draftbit you can design your app visually, and then export clean, well-documented code and libraries that give you full control.

Volk Wireless Inc. manufactures mobile phones. The company provides an android and distributed network smartphone with a free data plan without any carrier. Its product counts data usage and bytes shared via WiFi and enables users to get the amount they share. It also provides Volk Fi, a router and networking device that forward data and connects the mobile phones. The company was incorporated in 2017 and is based in San Francisco, California.

Supernova.io is a design-to-code platform based in Prague, Czech Republic, that streamlines the app development process for mobile designers and developers. The platform, known as Supernova Studio, allows users to convert mobile application designs from tools like Sketch into native code rapidly. It generates production-ready components, including buttons, images, and tables, while utilizing advanced algorithms for automatic asset export, localization, and animations without requiring a developer's intervention. Additionally, Supernova Cloud serves as a collaboration platform, enabling designers and developers to gather feedback directly from clients and team members while reviewing functional, working applications. This approach facilitates an efficient iterative process, bridging the gap between design and front-end development, and significantly reducing the time spent on tedious tasks.

Volk Wireless Inc. manufactures mobile phones. The company provides an android and distributed network smartphone with a free data plan without any carrier. Its product counts data usage and bytes shared via WiFi and enables users to get the amount they share. It also provides Volk Fi, a router and networking device that forward data and connects the mobile phones. The company was incorporated in 2017 and is based in San Francisco, California.

DocBot, Inc. is a technology company based in Irvine, California, that develops web-based applications for iOS and Android devices. The company's offerings include a clinical decision support system and cloud analytics, which aggregate patient information to assist physicians and specialists in delivering improved care. Additionally, DocBot has created an image analysis platform specifically designed to aid in the detection of colorectal cancer and gastrointestinal diseases. This platform integrates various data sources, including imaging systems and pathology requisitions, enabling healthcare providers to enhance patient outcomes while reducing cancer risk. Through its commitment to intuitive software design, DocBot aims to empower physicians in their clinical decision-making processes.

Cover Financial, Inc. is a mobile-first insurance brokerage founded in 2015 and based in San Francisco, California. The company provides a mobile application that allows users to insure a wide variety of items, including vehicles, mobile phones, pets, jewelry, and properties, by simply taking a picture of the item to be insured. Cover partners with various insurance companies and brokers to offer competitive rates and comprehensive coverage options, including commercial property, workers compensation, general liability, and cyber insurance. Initially launched in Toronto, the application supports users in accessing tailored insurance solutions conveniently through their smartphones.

Miso is a technology company that operates an online-to-offline platform primarily focused on delivering on-demand home services in South Korea. Through its mobile applications for iOS and Android, Miso offers a variety of services, including home cleaning, moving, installation, repair, flooring, and interior design. The platform connects users with verified service providers, ensuring quality through a rating system and convenient payment options. Miso aims to enhance the home service experience by providing reliable, hotel-like cleaning and other household services, thereby addressing the growing demand for quality and convenience in the home services market.

Miru is a United States-based company that specializes in augmented reality technology, offering an application that enables users to visualize how various pieces of furniture will appear in their homes. The application facilitates this experience by allowing users to select items from multiple retailer websites, enhancing the decision-making process for home furnishings.

From MIT's App Inventor and YCombinator's W2016 batch, Thunkable allows anyone to build powerful native apps. With Thunkable, it's simple to design, and simple to code-- simply drag and drop to create fast, native, reliable apps. You don't need to download large development suites, command-line kits, or simulators. You can use the many built-in app templates as they are, or make changes. Make your changes online and see them on your device instantly with the Thunkable mobile app. Upload your apps directly to the Play Store or send them to friends!

Arrow is a platform for augmented reality video sharing.

Draftbit is a new way to build cross-platform, native iOS and Android apps in minutes instead of months. Whether you're a designer or developer, with Draftbit you can design your app visually, and then export clean, well-documented code and libraries that give you full control.

Cover Financial, Inc. is a mobile-first insurance brokerage founded in 2015 and based in San Francisco, California. The company provides a mobile application that allows users to insure a wide variety of items, including vehicles, mobile phones, pets, jewelry, and properties, by simply taking a picture of the item to be insured. Cover partners with various insurance companies and brokers to offer competitive rates and comprehensive coverage options, including commercial property, workers compensation, general liability, and cyber insurance. Initially launched in Toronto, the application supports users in accessing tailored insurance solutions conveniently through their smartphones.

Miso is a technology company that operates an online-to-offline platform primarily focused on delivering on-demand home services in South Korea. Through its mobile applications for iOS and Android, Miso offers a variety of services, including home cleaning, moving, installation, repair, flooring, and interior design. The platform connects users with verified service providers, ensuring quality through a rating system and convenient payment options. Miso aims to enhance the home service experience by providing reliable, hotel-like cleaning and other household services, thereby addressing the growing demand for quality and convenience in the home services market.

Expo lets developers build universal native apps that work across Android, iOS, and the web by writing them once in just JavaScript.

Upgraded operates an online platform that helps users to upgrade their phones, tablets, computers, and accessories. Pick from any number of phones, tablets, computers and accessories from your favorite brands. Time upgrades on your own terms—like every year for your phone, or every three years for your laptop and pay just one low monthly price. No more keeping track of old devices, or selling them on craigslist. Upgrades and exchanges happen automatically according to your plan.

From MIT's App Inventor and YCombinator's W2016 batch, Thunkable allows anyone to build powerful native apps. With Thunkable, it's simple to design, and simple to code-- simply drag and drop to create fast, native, reliable apps. You don't need to download large development suites, command-line kits, or simulators. You can use the many built-in app templates as they are, or make changes. Make your changes online and see them on your device instantly with the Thunkable mobile app. Upload your apps directly to the Play Store or send them to friends!

UpLabs Inc. operates a website that serves as a resource hub for designers and developers seeking inspiration and tools to create applications and websites. Established in 2015 and based in Mountain View, California, the platform allows users to browse daily showcases featuring material design for Android, iOS, and OS X, as well as various web resources. It provides a space for designers and developers to search for specific user interface elements, share their own work—such as designs, libraries, and code snippets—as inspiration or freebies, and sell products like themes, templates, and icons. Through its curated content, UpLabs aims to foster collaboration and creativity within the design and development community.

Mason America, Inc. develops hardware and customized software solutions. The company provides a platform to manage, update, and scale custom android devices. It enables businesses to build devices pre-loaded with its customizable Android operating system; and remotely run the hardware and software services on dedicated custom devices that keep their mission-critical applications running 24/7. The company was incorporated in 2015 and is based in Seattle, Washington.

Unnyhog FZ-LLC, founded in 2015 and based in Ukhta, Russia, develops a gaming platform that caters to both mobile and desktop users with fast-paced games. The company was established by a group of gaming enthusiasts who identified various shortcomings in existing mobile games, motivating them to create their own. To date, Unnyhog has developed three games, which have collectively garnered over 4 million downloads, demonstrating their appeal and success in the gaming market.

Magic Instruments, Inc. is a company based in San Francisco, California, that specializes in the development of software-assisted electronic musical instruments and mobile applications aimed at making music accessible to everyone. Founded in 2012, the company designs and manufactures an innovative augmented guitar and a supporting mobile app that simplifies the process of learning to play music. This technology allows users to begin playing instantly, making it comparable to gaming experiences like Guitar Hero, while also teaching essential techniques and fostering musical expressiveness.

Cover Financial, Inc. is a mobile-first insurance brokerage founded in 2015 and based in San Francisco, California. The company provides a mobile application that allows users to insure a wide variety of items, including vehicles, mobile phones, pets, jewelry, and properties, by simply taking a picture of the item to be insured. Cover partners with various insurance companies and brokers to offer competitive rates and comprehensive coverage options, including commercial property, workers compensation, general liability, and cyber insurance. Initially launched in Toronto, the application supports users in accessing tailored insurance solutions conveniently through their smartphones.

Wakie is a company that develops mobile applications designed to provide real live human wake-up calls through a community-based approach. Founded in 2011 and headquartered in Moscow, Russia, Wakie offers services that allow users to wake each other up, creating a friendly and engaging alternative to traditional alarm clocks. Among its products is Budist, a Russian-language wake-up app, and Wakie, which serves an international audience. By leveraging a community of users, Wakie aims to transform the wake-up experience into a more personal and enjoyable interaction.

Magic Instruments, Inc. is a company based in San Francisco, California, that specializes in the development of software-assisted electronic musical instruments and mobile applications aimed at making music accessible to everyone. Founded in 2012, the company designs and manufactures an innovative augmented guitar and a supporting mobile app that simplifies the process of learning to play music. This technology allows users to begin playing instantly, making it comparable to gaming experiences like Guitar Hero, while also teaching essential techniques and fostering musical expressiveness.

Apollo Health

HyperPad allows non technical users like artists to create amazing mobile games then publish them to the App Store as native apps.

HoverChat is a mobile messaging application designed to enhance user productivity by enabling seamless multitasking. It allows users to engage in messaging without disrupting their workflow, making it a practical tool for those who need to manage communications while focusing on other tasks. Currently available for Android smartphones, HoverChat serves as an SMS replacement, offering a streamlined experience that integrates messaging into everyday activities.

Minuum is a mobile application that provides users with a smaller keyboard, taking up less of the screen. The application can be used in iOS and Android devices, smart watches, Google glasses, smart TV remotes, and in mid-air typing. The keyboard is empowered with autocorrect facility and supports many languages, including Deutsche, Russian, Italian, and Spanish. The users can customize the keypad by adding colors, styles, resizing, themes, and emoji. Adding new words is easy with the app and helps its users with punctuation issues. Minuum is a Canada-based company that was founded in 2012 by Will Walmsley, Severin Smith, and Xavier Snelgrove.

Appcubator has launched to allow users to create their own web applications with drag and drop, text inserts and custom themes, rather than having to endure the arduous process of learning to create a full-functioning website or hire a contractor.

IXI-Play is building a smart, Android-based robot for young children. They can play games with it; they’ll show the robot cards and it will mimic emotions on them. It sees, hears, speaks and moves. The toy itself retails for $299 but it will also come with an app store and other accessories. It’s a hardware platform that can have customizable skins for different characters so it can either build its own IP or license out IP from other toy companies.

Echo Lockscreen is a lock screen that allows you to conveniently and easily view and manage all of the notifications on your Android device.

Realm ApS is a mobile database company that provides a platform designed to streamline application development by replacing traditional databases like SQLite and Core Data. Founded in 2011 and headquartered in Copenhagen, Denmark, with an additional office in San Francisco, Realm offers a solution that enhances performance and user experience through features such as querying, relationships, graphs, and thread safety. The database is available on Android, iOS, and OSX platforms, allowing for memory-efficient data access via Realm objects. As of May 2019, Realm operates as a subsidiary of MongoDB, Inc. The platform significantly reduces the amount of code developers need to write, enabling them to create applications more quickly and efficiently.

WatchSend is a technology company based in Mountain View, California, that provides a software library designed for mobile application developers. Its solutions enable the automatic recording of user interactions within apps, including every screen viewed, button pressed, and action taken. Additionally, WatchSend captures video footage of the app whenever it crashes, helping developers gain insights into user behavior and app performance. This functionality allows developers to better understand how their applications are utilized, ultimately improving user experience and app reliability.

Assorted Bits offers a mobile calendar for all the user's fun stuff.

Test your app on a large pool of Android and iOS versions and devices. No need to constantly buy and upgrade your devices. Testmunk ensures complete device and OS coverage currently available on the market. Devices are non-jailbroken. We support native and hybrid apps.

Binary Thumb is the maker of Grid, a reinvented spreadsheet application for iPad and iPhone.

Handcrafted iPhone travel guides that are free, offline, and just plain full of awesomeness.

Coco Controller is a Kickstarter project that adds directional controls and game buttons to almost any phone, including the Galaxy SIII, iPhone, and most standard Android handsets.

Socialcam is a mobile video application available for both iPhone and Android devices. It enables users to capture, edit, and share high-quality videos, making it a convenient platform for documenting and sharing life's moments with friends and family. The app emphasizes ease of use, allowing users to quickly create and view videos online. Socialcam aims to enhance social interactions by providing a fun and engaging way to communicate through video content.

When we began our first experiments with using Mobile devices a few years ago we were very excited by the possibility of learning in nontraditional manner. The beauty of effectiveness of the iPhone first and the iPad platforms gave shape to our vision of building beautiful apps, designed to build learning for your iPhone, iPod touch and iPad Devices. Each of our apps are extremely easy to use, focus on just one area of learning using interactivity and add an element to fun while learning.

Talkray is a developer of a mobile communication application that transforms smartphones into walkie-talkies, allowing users to make free calls and engage in chat. The application is available for download on both Android and iPhone platforms. In addition to voice communication, Talkray enables users to share photos, videos, and locations, facilitating a more connected experience with friends and family. The app prioritizes ease of use and accessibility, making it a versatile tool for maintaining personal connections.

LVL6 creates social mobile games on Android and iOS.

Flypad turns your iPhone into a motion-sensing game controller for PC, Steam, & indie games.

Embark is a mobile application designed to make it easy to get around cities using mass transit. Among other features, the iOS and Android application tells users when trains and busses are coming and will send push notifications when services are delayed. With over half a million users and rapid growth, Embark's simple and powerful mobile application is designed to bring urban transportation into the age of the smartphone. Embark is available for twelve major transportation systems in the US and the UK and is expanding rapidly. Embark won best transit and mobility app awards from the New York MTA App Quest and NYC Big Apps 3.0 contests.

Shopular, Inc. is a mobile application developer founded in 2011 and based in Redwood City, California. The company specializes in enhancing the shopping experience by providing users with personalized notifications for sales and coupons when they are in proximity to stores or malls. The Shopular app is available on both iPhone and Android platforms and has gained recognition as the highest-rated app in its category. It was also listed by Time Magazine as one of the 50 best iPhone apps in 2013. As of March 2016, Shopular operates as a subsidiary of Ebates, Inc.

Firebase was acquired by Google in 2014 and has become Googles flagship mobile platform for developers building iOS, Android, and Web apps. Firebase has been bolstered by 3 acquisitions since joining Google: Fabric/Crashlytics, Divshot, and LaunchKit. Firebase is used by >1,000,000 developers and is made up of complementary features that you can mix-and-match to fit your needs including: Free & unlimited Analytics, a Realtime Database, User Authentication, Crash Reporting, Push Notifications, and more. Learn more at http://www.firebase.com

Clutch offers innovative tools designed to enhance the efficiency of website and mobile application development. By streamlining the process of creating user interfaces, Clutch enables designers and developers to collaborate seamlessly without the need for time-consuming code conversion. The platform features a visual design canvas called "Clutch Creator," which facilitates real-time teamwork, akin to a Google Docs experience, allowing multiple users to work on the same project simultaneously. Additionally, Clutch provides a component engine and marketplace that empower professionals to create and share reusable components that integrate easily with existing backends and APIs. This integrated approach addresses common challenges in mobile app development, such as A/B testing and rapid iteration, ultimately offering a more effective solution for building front-ends than traditional tools available in the market.

ZigFu provides tools to help developers create apps that are controlled by human gestures. The company is based in San Francisco, California.

TapEngage is a startup that enables advertisers and publishers to collaborate on tablet-optimized advertising.

Realm ApS is a mobile database company that provides a platform designed to streamline application development by replacing traditional databases like SQLite and Core Data. Founded in 2011 and headquartered in Copenhagen, Denmark, with an additional office in San Francisco, Realm offers a solution that enhances performance and user experience through features such as querying, relationships, graphs, and thread safety. The database is available on Android, iOS, and OSX platforms, allowing for memory-efficient data access via Realm objects. As of May 2019, Realm operates as a subsidiary of MongoDB, Inc. The platform significantly reduces the amount of code developers need to write, enabling them to create applications more quickly and efficiently.

Apportable Inc. is a technology company based in San Francisco, California, that specializes in porting iOS games to Android automatically. Founded in 2010, the company has developed a software engine that enables iOS developers to convert their applications to Android without the need to rewrite their original Objective-C or C++ code. This streamlined process eliminates the hassle of maintaining separate code bases, allowing developers to focus on creating their games. Apportable also offers SpriteBuilder, a development environment for creating native cross-platform 2D games using Objective-C or Swift. The effectiveness of Apportable's platform is evident in the success of the apps it powers, which have consistently performed well in various app stores, garnering widespread user satisfaction.

Notifo is a mobile application and platform which allows any web site or service to easily create mobile notifications. While it's currently only an iPhone app, the plan is to eventually work on Android and BlackBerry devices too.

Heyzap is a premier mobile ad network that helps millions of users discover apps they love. Heyzap’s SDK for Android and iOS apps allows both well-established app producers and innovative indie developers to monetize and bring their apps to a wide audience. It currently provides advertising, publishing, mediation, and cross-promotion services to mobile developers worldwide. Heyzap is based in San Francisco and was founded in 2009 by Jude Gomila and Immad Akhund.

Trigger, a San Francisco, CA-based company that has just launched its cross-platform mobile development framework targeted at web developers who want to be able to create native mobile apps.

Trigger, a San Francisco, CA-based company that has just launched its cross-platform mobile development framework targeted at web developers who want to be able to create native mobile apps.

Heroku is a cloud application platform designed for developers, enabling them to deploy, scale, and manage applications without the complexities of server management. Founded in July 2007 in San Francisco, California, Heroku supports multiple programming languages, including Ruby, Java, Node.js, Clojure, Python, PHP, Perl, and Scala. The platform operates using a system of application containers, known as “dynos,” which are distributed across a grid of servers. This architecture allows for efficient application management and scalability. Acquired by Salesforce in 2011, Heroku continues to function independently, providing a user-friendly environment for software development and collaboration.

Mobile applications have so far been nightmares to implement. It's often hard to gain adoption due to complicated installs and near impossible to get users to upgrade their version once the product has shipped. Tsumobi hopes to solve this problem by creating their own language. The new language will sit on top of J2ME and process applications downloaded (via URL) for Tsumobi enabled sites. This means that developers will be able to change Tsumobi applications on the fly and have Tsumobi enabled phones automatically get the updates just by visiting a link.