React Native Migration Audit
€1,500 excl. VAT5 business days
Running a React Native app in production on an old version? We analyze it and hand you a costed, prioritized migration plan.
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Offers - Modernize a React Native or hybrid app
A React Native, Expo, Cordova or Ionic app that is no longer updated eventually catches up with you: abandoned dependencies, broken builds, Apple and Google requirements that block your updates from being published.
Modernizing an app does not mean rewriting it. Most of the time it can be brought up to date while keeping your business code: React Native or Expo upgrade, switch to the New Architecture, migration from Cordova or Ionic to Capacitor.
If you don't know how much work lies ahead, start with the audit: it costs out the migration before any commitment, and its price is deducted if you hire us for the next step within 30 days.
Full React Native Migration
From €18,000 excl. VAT4 to 8 weeks
Full migration to the latest stable version, New Architecture, dependency upgrades and store redeployment. Fixed price, scope defined after the audit.
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Expo SDK & New Architecture Upgrade
From €6,500 excl. VAT2 to 4 weeks
Your Expo or React Native app is a few versions behind? Upgrade to the latest Expo SDK, switch to the New Architecture and publish to the stores.
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Cordova / Ionic to Capacitor Migration
From €9,500 excl. VAT3 to 6 weeks
Your Cordova or Ionic app migrated to Capacitor without a full rewrite: plugins replaced, off Ionic Appflow, compliant with the App Store and Google Play.
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How to choose?
- You don't know how much work lies ahead. The React Native Migration Audit analyzes your code and hands you a costed, prioritized migration plan, so you can pick one of the offers below with full knowledge.
- Your Expo or React Native app is a few versions behind. The Expo SDK & New Architecture upgrade brings it to the latest Expo version and publishes it to the stores, in 2 to 4 weeks.
- Your React Native app is very old. With many native modules or abandoned dependencies, it needs a full React Native migration, with the scope set after the audit.
- Your app runs on Cordova or Ionic. The migration to Capacitor keeps your web code, replaces the plugins and moves you off Ionic Appflow, without a full rewrite.
Frequently asked questions
Expo upgrade or full React Native migration: which one should I choose?
The GUIGUI Tech Expo SDK & New Architecture upgrade (from €6,500 excl. VAT, 2 to 4 weeks) suits apps that are a few versions behind. The full React Native migration (from €18,000 excl. VAT, 4 to 8 weeks) is for very old apps, with many native modules or abandoned dependencies. If in doubt, the €1,500 excl. VAT React Native audit settles it.
Does an old React Native app need to be rewritten?
Rarely. In most cases, an old React Native app can be migrated to the latest stable version without a full rewrite: dependencies upgraded, native modules replaced, switch to the New Architecture. The GUIGUI Tech React Native audit (€1,500 excl. VAT, 5 business days) analyzes the code and delivers a costed migration plan before any commitment.
What should I do with a Cordova or Ionic app today?
Migrate it to Capacitor, without a full rewrite: the web code is kept, Cordova plugins are replaced or adapted and the app is brought back into compliance with the App Store and Google Play. GUIGUI Tech offers this migration from €9,500 excl. VAT, in 3 to 6 weeks, including moving off Ionic Appflow.
Is the React Native New Architecture mandatory?
Yes, to stay up to date: since React Native 0.82, the New Architecture can no longer be disabled. An app that wants to follow new React Native and Expo versions, and therefore the store requirements, has to switch. GUIGUI Tech handles this switch as part of the Expo SDK & New Architecture upgrade or the full React Native migration.
Not sure which offer fits?
Book a 30-minute call: we point you to the right offer, or tell you plainly if none of them fits. No commitment.
Further reading
Failed React Native migration: diagnosis and recovery plan
React Native migration gone wrong or upgrade broken? Common causes, a migration audit checklist and a step-by-step recovery plan back to the stores.
Read moreReact Native 0.82: the New Architecture is mandatory, what should you do with your app?
The React Native New Architecture is mandatory since 0.82: what changes, how to assess your app and migrate step by step via RN 0.81 / Expo SDK 54.
Read moreRebuild your app from scratch or save it? How to decide
Rewrite or refactor your app? The criteria, the three options, a decision table and the pitfalls specific to mobile apps on the App Store and Google Play.
Read moreGoogle Play requires Android 16 (API 36): what to do if your app is blocked
Google Play requires API 36 (Android 16) to publish any update. What changes, the risks of doing nothing and the steps to unblock your app.
Read more