Y Combinator

YourQuote Solutions Pvt. Ltd. develops mobile application which allows users to create and share short quotes or text in English and 15 other languages. The company was founded in 2017 and is based in New Delhi, India.

ProPhone develops a mobile app that handles customer communication for home service professionals. It empowers small home service business owners to move online and control communications intelligently as well as help them to understand their highest value clients, enabling businesses to grow their business and optimize the time they spend running their business.

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

OpenPhone is a business communication platform that offers a smart phone application designed to provide users with a reliable business phone number without the need for an additional phone or SIM card. Founded in 2018 and based in San Francisco, the platform facilitates seamless communication by differentiating between business and personal contacts. It utilizes Voice over Internet Protocol (VoIP) technology, allowing users to make calls and send texts over the internet. OpenPhone offers features such as unlimited messaging and calling, call routing, auto-recording of calls, and automated responses to texts and missed calls. The application is available for both mobile and desktop, catering to startups, small businesses, and professionals looking to enhance their communication efficiency.

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.

Sidekick is a new device that runs a background video call to make it feel like you're sitting in the same room as your team. Teams set up co-working hours on Monday Wednesday and Friday from 2-5pm to build team camaraderie and to make remote work less lonely.

OpenPhone is a business communication platform that offers a smart phone application designed to provide users with a reliable business phone number without the need for an additional phone or SIM card. Founded in 2018 and based in San Francisco, the platform facilitates seamless communication by differentiating between business and personal contacts. It utilizes Voice over Internet Protocol (VoIP) technology, allowing users to make calls and send texts over the internet. OpenPhone offers features such as unlimited messaging and calling, call routing, auto-recording of calls, and automated responses to texts and missed calls. The application is available for both mobile and desktop, catering to startups, small businesses, and professionals looking to enhance their communication efficiency.

Embrace is the only performance monitoring and debugging platform built for mobile apps. Whether an unsolved crash, a bug in the checkout flow, an error log without resolution, or a startup that takes too long, developers need to find every issue and not take days. With Embrace, mobile teams instantly look up any user, see every user’s sessions on command, and understand what happened seconds and minutes before any error of any type.

Vahan Inc. develops a mobile education platform for low-income populations. The company offers Vahan, an application for feature phones and smartphones that enables students to practice what they’re learning in the classroom, outside it. Its application helps students maximize learning outcomes; and Web-based learning management system allows instructors to track their students' scores and progress, review students' responses, and send them feedback via SMS or voice messages. The company was founded in 2015 and is headquartered in Franklin Lakes, New Jersey.

Community Phone buys minutes, texts, and gigabytes from all the existing networks around the world and predicts your future usage to offer discounted plans with immediate U.S. based support over the phone. We are lucky to serve special needs trusts, municipalities, and seniors.

Bouncer is a technology company specializing in fraud prevention, particularly in the realm of online payments. It has developed advanced machine learning technology for credit card scanning, designed to enhance the user experience during checkout and improve customer conversion rates. Bouncer's solutions provide businesses with security comparable to card-present transactions, despite operating in a card-not-present environment. In May 2021, Bouncer was acquired by Stripe, an international payments processor, to integrate its innovative technology into Stripe's existing fraud prevention tools.

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.

Embrace is the only performance monitoring and debugging platform built for mobile apps. Whether an unsolved crash, a bug in the checkout flow, an error log without resolution, or a startup that takes too long, developers need to find every issue and not take days. With Embrace, mobile teams instantly look up any user, see every user’s sessions on command, and understand what happened seconds and minutes before any error of any type.

Mobot Inc. is a New York-based company that offers an on-demand mobile app testing service utilizing computer vision and robotics on real devices. Founded in 2018, the company specializes in automated functional testing for various industries, including mobile applications, e-commerce, Internet of Things (IoT), and medical devices. By providing these testing solutions, Mobot enables organizations to ensure the quality and functionality of their mobile products and connected devices.

Mobot Inc. is a New York-based company that offers an on-demand mobile app testing service utilizing computer vision and robotics on real devices. Founded in 2018, the company specializes in automated functional testing for various industries, including mobile applications, e-commerce, Internet of Things (IoT), and medical devices. By providing these testing solutions, Mobot enables organizations to ensure the quality and functionality of their mobile products and connected devices.

Community Phone buys minutes, texts, and gigabytes from all the existing networks around the world and predicts your future usage to offer discounted plans with immediate U.S. based support over the phone. We are lucky to serve special needs trusts, municipalities, and seniors.

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.

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.

OpenPhone is a business communication platform that offers a smart phone application designed to provide users with a reliable business phone number without the need for an additional phone or SIM card. Founded in 2018 and based in San Francisco, the platform facilitates seamless communication by differentiating between business and personal contacts. It utilizes Voice over Internet Protocol (VoIP) technology, allowing users to make calls and send texts over the internet. OpenPhone offers features such as unlimited messaging and calling, call routing, auto-recording of calls, and automated responses to texts and missed calls. The application is available for both mobile and desktop, catering to startups, small businesses, and professionals looking to enhance their communication efficiency.

Universe is a mobile-based website builder established in 2014 and headquartered in Brooklyn, New York. The platform aims to empower users to create customized websites quickly and easily, catering to the needs of small business owners and individuals who prefer mobile solutions. By offering a unique approach that eliminates complicated templates, Universe utilizes customizable website filters that allow users to arrange photos, videos, and icons on a grid pattern through a simple drag-and-drop interface. This enables users to build mobile-optimized websites in just minutes using the company's iOS app, providing them with full control over their online presence.

Universe is a mobile-based website builder established in 2014 and headquartered in Brooklyn, New York. The platform aims to empower users to create customized websites quickly and easily, catering to the needs of small business owners and individuals who prefer mobile solutions. By offering a unique approach that eliminates complicated templates, Universe utilizes customizable website filters that allow users to arrange photos, videos, and icons on a grid pattern through a simple drag-and-drop interface. This enables users to build mobile-optimized websites in just minutes using the company's iOS app, providing them with full control over their online presence.

Covetly is the #1 mobile destination for hobbyists to organize, appraise & trade their collections. This is THE RETAIL DREAM; a marketplace built on top of a daily utility to sort and value the same items sold!

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.

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.

PocketSuite, Inc. is a mobile application designed to assist independent professionals and service entrepreneurs in managing their businesses efficiently from their smartphones. Founded in 2012 and headquartered in San Francisco, California, PocketSuite provides tools for scheduling appointments, accepting payments, and facilitating direct communication with clients. The app also allows users to synchronize their calendars and integrate their business operations with websites and social media platforms. By offering enterprise resource planning capabilities tailored for small businesses, PocketSuite aims to enhance client relationships and streamline business processes for freelancers and self-employed individuals across various industries. The application is available for free download, making it accessible to a wide range of professionals seeking to improve their operational efficiency.

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.

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.

Cheddar is a mobile bank account, debit card, and business model that enables users to check their accounts with their mobile phones.

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

Doblet, Inc. operates a network of app-driven portable batteries on demand in the San Francisco Bay Area, making it the first service of its kind for charging smartphones. Founded in 2013 and based in San Francisco, the company provides a mobile application for iOS and Android that enables users to locate nearby venues, such as cafes, bars, and restaurants, where they can access Doblet charging devices. When a user's phone battery is running low, the app instantly notifies them of the nearest location to pick up a portable charger. With over 1,000 participating venues, Doblet aims to ensure that consumers have access to portable power wherever they are.

Strikingly, Inc. is a website development platform founded in 2012 and based in San Francisco, California. It enables users, particularly small businesses and individuals, to create mobile-optimized websites without requiring any coding or design skills. Strikingly adopts a "mobile first, web second" approach, ensuring that its websites are fully optimized for smartphones, tablets, and desktops while allowing users to manage a single online presence. The platform offers pre-designed templates and layouts to streamline the website-building process, significantly reducing the time and effort involved. Strikingly generates revenue primarily through premium subscriptions, which provide users with benefits such as custom domain connections and the removal of platform branding.

Pushbullet Inc. is a mobile application developer based in San Francisco, California, established in 2013. The company offers a platform that enables users to seamlessly send links, addresses, reminders, and checklists between their computers and mobile devices. Pushbullet's services also allow users to share files and information with friends, facilitating quick and secure communication across different devices.

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.

Strikingly, Inc. is a website development platform founded in 2012 and based in San Francisco, California. It enables users, particularly small businesses and individuals, to create mobile-optimized websites without requiring any coding or design skills. Strikingly adopts a "mobile first, web second" approach, ensuring that its websites are fully optimized for smartphones, tablets, and desktops while allowing users to manage a single online presence. The platform offers pre-designed templates and layouts to streamline the website-building process, significantly reducing the time and effort involved. Strikingly generates revenue primarily through premium subscriptions, which provide users with benefits such as custom domain connections and the removal of platform branding.

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.

OrderAhead powers mobile ordering for pickup at thousands of restaurants and local merchants

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

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.

SendHub is the Phone System for the Mobile World. There's no hardware, setup is instant and it scales elastically with a single click. Users are given a phone number in any area code, they can use from any device: Web, iPhone, Android, Feature Phones and via our API. Businesses can add lines for everyone on their team for free, with complete transparency and powerful analytics on every aspect of your telecommunication. Additional Features: Auto Attendant, Call Transfer, Company Directory, Contact Sharing, Voicemail Transcription, Text Marketing & Group Texting, Free Internal Communication.

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.

Hipmob brings easy-to-use live chat, helpdesk, feedback, and customer engagement tools to mobile and tablet businesses. It serves from mobile-native startups to small businesses to large public companies with tools to increase sales and transform customer support. Hipmob provides its clients with real-time contextual information about their customers, including devices, apps, operating systems, geographic info, and more. It was founded in 2012 by [Ayo Omojola](https://www.crunchbase.com/person/ayo-omojola) and is based in Palo Alto, C.A.

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.

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.

Everyme is a social networking app that provides its users with a mode to communicate with groups free of charge across the world. It is available on both mobile devices and the web. Everyme is an alternative to SMS groups, and it enables its users to customize their group's settings, manage people who have access to the things they share, and gives them control over notifications than in texting. In addition, with comments and cross-platform video and photo sharing, Everyme provides a greater depth of communication than texting does. It provides a user-friendly privacy policy and model and the users can export the data and remove at any time as the sole ownership of the shared content lies at the app user. The mobile app is available for both Android-powered mobile devices and Apple iOS-based smart phones, and it can be downloaded from Google Play and Apple App Store respectively. The company is a self-funded startup based in San Francisco, California, U.S.

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.

TalkBin offers a platform that lets customers give immediate feedback to local businesses (users submit their opinions and critiques via mobile applications, and it looks like the businesses can read and respond to them from a web app).

OrderAhead powers mobile ordering for pickup at thousands of restaurants and local merchants

MessageParty is a new kind of mobile blogging service. Users can create and consume content from mobile browsers, a native iphone app, or the web.

Fithub provides streamlined communication, a mobile focused workout and nutrition plan delivery system.

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.

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.

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.

Loopt is a social service that connects people to their community. Loopt's mobile application and website give users the inside scoop wherever they go — tapping into local intelligence about places, making it easy to find friends and track down the best deals. Devices with Loopt include iPhone, iPod Touch and Android. Loopt has more than five million registered users in the U.S. and offers a variety of intuitive privacy controls to its users. Loopt is based in Mountain View, Calif.