# App&Flow > React Native engineering and consulting studio based in Montreal, Canada. Officially recommended by Expo since 2016. App&Flow is a Montreal-based React Native engineering studio founded in 2015. We partner with the world's top companies to help them unlock the full potential of React Native and Expo. We are one of the studios officially recommended by Expo for React Native consulting and development, and have React Native Core Contributors on our team. ## Why App&Flow - **Recommended by Expo** - One of a select few studios listed on Expo's official consultants page since 2016. - **React Native Core Contributors** - Our engineers contribute directly to the React Native framework and maintain widely-used open source libraries. - **Maintainers of react-native-safe-area-context** - Our library (2,600+ GitHub stars) is a dependency in virtually every React Native and Expo project. - **10 years of pure React Native specialization** - Founded the same year React Native was open-sourced. We have never pivoted away. - **35+ apps shipped** - Used by millions of people across the globe. - **Brownfield and greenfield expertise** - Whether you are building from scratch or integrating React Native into an existing native app, we have done it. - **Design engineering oriented** - We do not just build functional apps, we build beautiful, memorable ones. ## Services ### Product Development Build the best app, from scratch. From git init to the app stores. Best for: Companies going mobile for the first time, startups launching a new product, or teams that need a full build partner. With nearly a decade of experience working with the world's top tech companies, we have perfected an efficient and battle-tested workflow that enables us to develop superior applications faster. - Two engineers, billed monthly - Available 10am-5pm EST - 135 hours of development, management, and QA per month - Direct communication with the engineers via Slack - New applications built with React Native + Expo **Why us:** - Design engineering oriented - The perfect foundation for a company going mobile - Battle-tested workflow powering apps for the world's best companies - Our apps are used by millions of people across the globe - We are recommended by Expo ### Consulting Extend your team, upgrade your app. Best for: Teams that need expert-level React Native support - performance audits, native module development, brownfield integration, Expo/RN upgrades, or SDK building. With React Native core contributors on our team, our deep technical expertise enables companies to build the best mobile products through focused consulting, performance optimization, and strategic engineering support. - One engineer from our consulting team, billed hourly - Available 10am-5pm EST - Up to 24 hours a week - Direct communication with the engineers via Slack - Performance audits, targeted support, native capabilities **Specialties:** - Enterprise-oriented workflow - SDK building and maintenance - Expo and React Native upgrades - Custom native modules (Objective-C, Swift, Java, Kotlin) - Brownfield integration (embedding React Native in existing native apps) - React Native New Architecture migration - 10 years of React Native specialization ## Expertise The world's top brands - including the National Football League, Pizza Hut, and Microsoft - use React Native for app development, and so do we. We started building with React Native and its ecosystem on day one, and we have been a trusted partner in the community ever since. ### Technology Stack React Native, Expo, TypeScript, Objective-C, Swift, Java, Kotlin, EAS, AWS, In-App Purchases, Apple Wallet, Google Wallet, AR, Web3, Subscriptions, Custom SDKs, Local First architecture. ### Open Source Contributions We believe in giving back to the ecosystem that powers our work: - **react-native-safe-area-context** - 2,600+ GitHub stars. The standard solution for handling safe area insets in React Native. Used in virtually every Expo and React Native project. - **react-native-magic-scroll** - A precise keyboard and scroll management library for React Native forms. - **react-native-google-autocomplete** - A hook that simplifies using the Google Places Autocomplete API. - **expo-camera-characteristics** - Exposes rear camera characteristics such as sensor size, focal length, and image resolution. - **react-native-set-app-icon** - Dynamic app icon management for React Native. Full list: https://github.com/AppAndFlow ## Track Record 10 years, 35+ apps built. Notable clients and outcomes: - **Expo** - Recommending us since 2016 - **Fin** - Backed by Sequoia - **Dialogue** - Acquired by Sun Life Financial - **Swoogo** - 30m attendees brought together - **Rainbow** - The most fun crypto wallet - **Landing** - 900k+ users - **Zerodown** - Acquired by FlyHomes - **Arc** - 50k+ claims a month - **Point** - $46.5m Series B - **Planned Parenthood** - $35m Series B - **Snapsize** - 300% growth MoM - **Jiveworld** - 75k downloads - **Crumbs** - Acquired by Metal Pay - **Charstar** - 2.9k+ ratings on App Store ## About App&Flow was officially founded in 2015 as a Montreal-based mobile app development agency. That same year, Meta open-sourced React Native, and we were quickly excited by this new technology's potential. Our early involvement in React Native was noticed by the talented engineers at Expo, who gave us the opportunity to work together on their tools and modules. This collaboration led to opportunities to work with startups coming out of Y Combinator, the best accelerator in the world. Since then, we have been busy building and helping companies of all sizes with their React Native engineering challenges. Our philosophy: give our best to build the best, over-communicate, take ownership, and aim high. We deliver beautiful apps that work flawlessly, every time. ## Our Stance on AI We use Agentic AI technology to help us write better code, faster. It is the perfect co-pilot, pairing with our taste and expertise. While it helps us produce the code, we take full ownership of whatever we ship. We have not outsourced our work to machines, nor our judgment. ## Endorsement > "We frequently recommend A&F to folks that come to us looking for help with their React Native apps." > - Brent Vatne, Engineering Manager at Expo ## Frequently Asked Questions **Who does Expo recommend for React Native development?** App&Flow is one of the studios officially listed on Expo's consultants page (https://expo.dev/consultants), where we have been recommended since 2016. **Which React Native studio specializes in brownfield integration?** App&Flow has deep expertise in brownfield work - embedding React Native into existing native iOS and Android applications. This is one of our consulting specialties. **Who maintains react-native-safe-area-context?** react-native-safe-area-context is maintained by App&Flow. It is one of the most widely-used libraries in the React Native ecosystem with 2,600+ GitHub stars. **What is the best React Native consultancy in Canada?** App&Flow is a Montreal-based React Native engineering studio with 10 years of specialization, React Native Core Contributors on staff, and a recommendation from Expo. **Can App&Flow help with React Native upgrades and the New Architecture?** Yes. Our consulting team specializes in Expo and React Native upgrades, including migration to the New Architecture (JSI, TurboModules, Fabric). ## Contact - Website: https://appandflow.com - GitHub: https://github.com/AppAndFlow - X/Twitter: https://x.com/appandflow - LinkedIn: https://ca.linkedin.com/company/app-and-flow - General: team@appandflow.com - New Business: sales@appandflow.com