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App rebuild and migration

Two native apps mean two codebases, two teams and features that ship at different times: one React Native app fixes that. The other way round, some apps outgrow React Native and need native Swift and Kotlin for performance, widgets, watch apps or deep system features. We have shipped both, and we rebuild your app in the right direction while keeping your users signed in, your data and your store listings.

Price
From €15,000 excl. VAT
Timeline
2 to 6 months

What's included

  • Audit of the existing apps, back end and analytics
  • Migration plan: screen by screen or all at once, with no break for users
  • Rebuild in React Native and Expo, or in native Swift (SwiftUI) and Kotlin (Jetpack Compose)
  • Accounts, sessions and data kept through the update
  • Same App Store and Google Play listings: no new app, no lost reviews
  • Handover and training for your team

For whom

  • Companies paying for two native apps
  • React Native apps that need native performance or system features
  • Apps built with Cordova, Ionic, Xamarin or an old React Native version
  • Apps whose store rating keeps dropping

Apps we built.

For Sarenza (Groupe Beaumanoir), we replaced their two native apps with a single React Native app built from scratch, now rated 4.6 on the App Store. TV Sports, which we have run since 2020, is built in native Swift and Kotlin.

See our work

How it works. A written quote within 48 hours.

  1. Free call

    We go through your project, your users and your deadline. 30 minutes, no commitment.

  2. Written quote

    A fixed scope and price within 48 hours, with what is included and what is not.

  3. Build

    Weekly test builds you can install on your phone, and a short progress update.

  4. Release

    Publication on the stores or online, source code in your repository, then maintenance if you want it.

Tell us about your project.

Reply within 24 hours, in English or French.

Email the teamcontact.glilab@gmail.com

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