Media kit Download logo

Expert Engineering

Build and scale React & React Native apps.

Architecture & Performance

React Native Performance Optimization

React Native Brownfield Integration

Migrations & Upgrades

Migration to React Native

React Native Upgrades

Enterprise Infrastructure

Release Automation

Release Monitoring & Observability

Feature Development

React Native Development

React Development

End-to-End Product Development

Super App Development

Mobile App Development

AI Developer Training

React Native Trainings

Agentic Delivery

Turn AI into better software delivery.

AI SDLC Advisory

AI-Driven QA & Testing

AI-Native Test Automation

AI-Generated Code Validation

Code Review Agents

Custom & Private Models

On-Premise LLM Deployment

LLM Fine-Tuning

React Native core contributors

Open source since 2016

Meet the Callstack experts

Work with us at Callstack

I joined to build robust React Native apps used by millions, and found myself surrounded by talented, friendly teammates who turn any challenge into a shared adventure.

Aleksandra Desmurs-Linczewska

Software Engineer @ Callstack

What I love most about Callstack is the constant opportunity to grow.

Thiago Brezinski

Software Developer @ Callstack

If you're focused on development, Callstack will support and challenge you.

Monika Stotko

Finance & Administration Manager @ Callstack

Technical deep-dives and expert insights

Interviews with industry leaders

Monthly React, React Native, and AI updates

Talks, workshops, and community events

Practical guides to React, React Native, and AI

Webinars & Live Streams

Live sessions on React, React Native, and AI

Videos that inspire what you build next

Check all topics

Explore all our engineering insights

One model across all React Native work.

A cost-effective, general-purpose model for everyday agent work. Frontier-level where React runs: React Native on mobile, Next.js on the web.

Book consultation

Insights

Web3

Web3 development brings blockchain and decentralized technologies to React Native applications. Learn how to integrate cryptocurrency wallets, interact with smart contracts, and build decentralized applications that work seamlessly across mobile platforms.

ALLArticlePodcastEventWebinarCase StudyTutorialTalkConferenceMeetupLive Stream

Events Cover

Build Universal Web3 Apps With React Native

Learn how to use React Native to build true cross-platform experiences (iOS, Android and Web) for your decentralized apps, from a single codebase.

Article Cover

The Mini Guide to React Native Optimization for Web3

Explore the essential strategies for optimizing React Native apps in the web3 landscape with this insightful mini-guide. Enhance stability, security, and UX.

Article Cover

Increase Speed and Security With Native Crypto Libraries

Boost speed and security in React Native with native crypto libraries. Uncover browser or Node.js API polyfill drawbacks, and find efficient solutions.

Article Cover

How to Build Universal Lens Protocol Social Apps With React Native

Unlock the potential of web3 social apps with Lens Protocol on the Polygon blockchain. Learn how to build a universal social network app using React Native.

Article Cover

Cross-Platform Web3 dApps With React Native

Discover the power of cross-platform development with React Native and Expo in this guide. Learn to build Web3 dApps for web, iOS, and Android.

Podcast Cover

Building the Future of Mobile Web3

Do Web3 and React Native go together? Tune in to our discussion about the possibilities & challenges of building cross-platform mobile apps with blockchain.

Article Cover

Best DX for React Native Web3 dApps With Web3Modal and Wagmi

Unsatisfied with developer experience of developing for Ethereum? Learn how to build a React Native dApp using Wagmi and Web3Modal.

Article Cover

Build Modern Web3 dApps on Ethereum With React Native and Viem

Learn to build modern web3 dApps on Ethereum using React Native and viem. Discover how viem outperforms traditional libraries.

Hire us

Integrating Web3 into React Native?

We assist teams in bringing Web3 functionality to their mobile apps.

2×Estimated AI-assisted delivery speedupJetBrains
25Working days from kickoff to mergeJetBrains
1Plugin across three frameworksJetBrains
10min from code change to mini-app releaseTeamworks
multi-dailystaging deployments instead of weekly releasesTeamworks
7mini-apps supported in one modular mobile platformTeamworks
2CI/CD lanes for mini-app and host-app distributionTeamworks
2xgrowth in mobile user base during the migration periodAutoZone
4.2 -> 4.7app rating increase after migrating to React NativeAutoZone
0missed releases during the transition to React NativeAutoZone
33%fewer re-renders across most featuresQuestrade
18%faster time-to-interactiveQuestrade
-28%CPU usage in critical trading flowsQuestrade
78%bundle size reduction (from 50 MB to 11 MB)Dream11
30%faster component mount time after render optimizationDream11
60%faster initial load time enabled by switching to HermesDream11
5xfaster message sending timeExpensify
4.5xfaster search screen loading timeExpensify
#1SEO rank, recovering from 3-9AutoZone
260kBless in blocking JS payloadAutoZone
2–5xfaster feedback loopAutoZone
2.8xincrease in knowledge over 8 weeks (25% → 71% assessment scores)Hello Fresh
15developers trained across web and native backgroundsHello Fresh
86%of devs self-rated their knowledge as 3/5 or higher after training (up from 0%)Hello Fresh
130%increase in users post-upgrade7cups
63%adoption rate; majority of attendees registered in the appReact Universe App
67%of attendees connected through QR badge sharingReact Universe App
45%created personalized badges to showcase identity and goalsReact Universe App
49%of attendees onboarded before day one, arriving ready to networkReact Universe App

Talk to our team

We’ll connect you with the right expert within 24 hours.

Talk to our team

By submitting, you agree to be contacted about your request.
Learn more in our Privacy Policy.

We don’t follow best practices.We set them.

Media kit Download logo

Get React, React Native, and AI updates in your inbox

By subscribing, you agree to receive marketing emails. You can unsubscribe anytime. Learn more in our Privacy Policy.*

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Services

Expert Engineering Agentic Delivery QA Agent AI-Assisted Migrations React Native Development Case Studies

Technology

Technology Open Source Agent Conf

Callstack

About Us Careers Hire Us Media Kit Privacy Policy Cookie Policy ISO 27001 Whistleblowing

Insights

Articles Podcast Newsletter Events Ebooks Webinars & Live Streams Tutorials Enterprise Report

2026 Callstack. All rights reserved. Callstack.io Sp. z o.o. seated in Wrocław, Poland, at Prosta 36, 53-508 Wrocław, entered in the Register of Entrepreneurs of the National Court Register, kept by the District Court of Wrocław-Fabryczna in Wrocław, VI Commercial Division of the National Court Register under the number 0000606530, with share capital of PLN 100,000.00, with tax identification number (NIP) PL8992785616, and statistical number (REGON) 363921820.