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 - Full React Native Migration
From €18,000 excl. VAT · 4 to 8 weeks · Fixed price
A full migration of your app to the latest stable version of React Native. New Architecture, dependency upgrades, breaking change fixes, store redeployment: demanding technical work we have been doing for 10 years.
Who is it for?
This offer is for you if:
- •You have already done the React Native audit (or an equivalent audit) and know what needs to be done
- •Your app must stay live in production throughout the migration
- •You want a fixed price, not time-and-materials billing that spirals
- •You are looking for a senior technical partner who takes ownership of delivery
What you get
- •Migration to the latest stable version of React Native
- •Move to the New Architecture (mandatory since React Native 0.82): plan and blockers
- •All dependencies upgraded and breaking changes resolved
- •Full testing on iOS and Android (physical devices + emulators)
- •Redeployment to the App Store and Google Play
- •Technical documentation of the migration for your team
- •30 days of post-delivery support: if anything related to the migration breaks, we fix it.
Why a fixed price
Billed by the hour, a React Native migration can easily go off the rails: an unexpected breaking change, an abandoned dependency, a native module to rewrite… And you pay for every hour.
With a fixed price, we carry the risk. The price is set after the audit, on a precise scope. If the migration takes longer than planned, that is our problem, not yours.
Method
- 1. Kick-off. Review of the audit plan, alignment on priorities.
- 2. Migration branch. Isolated work on a dedicated branch; your production is not affected.
- 3. Incremental migrations. Step-by-step upgrades, with testing at each stage.
- 4. Joint acceptance testing. You validate your critical business flows.
- 5. Progressive rollout. Release to the stores with a controlled rollout.
- 6. Post-release follow-up. 30 days of support included.
Prerequisites
- •Prior audit completed (by us, or a documented equivalent)
- •Access to the Git repository + Apple Developer and Google Play accounts
- •A technical contact on your side available for sign-offs
Frequently asked questions
How much does a React Native migration cost?
A full React Native migration by GUIGUI Tech costs from €18,000 excl. VAT. The exact price depends on the app's complexity: an app with 15 custom native dependencies does not take the same effort as a standard app. The price is set after the audit and becomes fixed once approved.
How long does a React Native migration take?
A full React Native migration by GUIGUI Tech takes 4 to 8 weeks, often 4 to 6. Beyond 6 weeks, it means custom native modules or an architecture overhaul are included, which is stated in the quote.
What happens if the React Native migration takes longer than planned?
The overrun is borne by GUIGUI Tech, not the client: the React Native migration is sold at a fixed price. The price only changes if the client changes the scope, which is then documented in a contract amendment.
Is submission to the App Store and Google Play included in the migration?
Yes. In GUIGUI Tech's React Native migration, submitting the migrated app to the App Store and Google Play is included, along with any fixes requested by Apple or Google that fall within the scope of the quote. A rejection related to the app's content or to a new feature is covered by a separate quote.
How does payment work for a React Native migration?
A React Native migration by GUIGUI Tech is paid in two installments: 30% upfront, 70% on delivery. Invoices are issued by our company, a French SAS.
Shall we talk?
Book a 30-minute callBefore any commitment, we qualify your needs over the phone. If you don't have an audit yet, that is where we start.
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