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Flutter upgrade service

Your Flutter app is stuck. We get it shipping again.

Outdated SDKs, broken Gradle builds, abandoned packages, store rejections — we untangle it, upgrade your app to current versions and hand back clean, store-ready builds.

Get a free upgrade assessment See pricing
  • Free assessment, then a fixed price
  • iOS and Android in one engagement
  • From a team that ships and maintains its own apps

From the team behind these apps

Sound familiar?

Flutter moves fast, and so do Apple and Google. Skip a few upgrade cycles and small gaps turn into a wall.

  • The build breaks after every change

    Gradle, Android Gradle Plugin, Kotlin, CocoaPods and Xcode versions no longer agree, and each fix exposes the next error.

  • Packages won't resolve

    The versions you need require a newer Dart SDK, and pinning or overriding dependencies only postpones the problem.

  • Plugins you rely on are abandoned

    Key packages are discontinued or unmaintained, and they're blocking the rest of your dependency tree.

  • The stores have set a deadline

    Google Play and Apple regularly raise target SDK and toolchain requirements. Miss them and you can't ship updates.

  • Old code won't compile on modern Dart

    Apps written before sound null safety or against removed APIs need a real migration, not a version bump.

  • Nobody wants to touch it

    The original developer has moved on, and previous upgrade attempts ended in a rollback.

What you get

A complete upgrade, not a list of warnings to fix yourself.

  • Upgrade assessment

    We review your Flutter and Dart versions, native toolchains and every dependency, then map the safest path to current.

  • Fixed-price plan

    Clear scope, timeline and price, agreed before any work starts.

  • The upgrade itself

    Flutter, Dart, Gradle, Kotlin, Xcode and package upgrades, with deprecated APIs migrated and abandoned plugins replaced.

  • Verified release builds

    Release builds for iOS and Android, tested on devices against your app's critical flows.

  • Store-ready

    Builds that meet current App Store and Google Play requirements, with help through submission if you want it.

  • Clean handover

    Notes on what changed and why, so your team can keep the app current from here.

How an upgrade works

  1. Free assessment

    Share access to your repository. We review it and walk you through what's blocking the upgrade.

  2. Fixed quote

    You get a scoped plan with a fixed price and a timeline.

  3. Upgrade

    We work on a separate branch and keep you updated as each stage lands.

  4. Release

    We verify release builds, hand over and help you ship.

Pricing

Know the price before we start

Every upgrade is different, so we look at your code first and quote a fixed price.

Upgrade assessment

30-minute call

Free

We review your project and explain exactly what's blocking the upgrade.

  • Dependency and toolchain review
  • Risks and effort, in plain language
  • No obligation
Get a free upgrade assessment

Upgrade project

Scoped to your app

Fixed quote

A full upgrade to current Flutter, Dart and native toolchains, priced before work starts.

  • Flutter, Dart and package upgrades
  • Android and iOS build fixes
  • Release builds for both stores
  • Handover notes
Get a free upgrade assessment

FAQ

Questions, answered

How much does a Flutter upgrade cost?

It depends on how far behind the app is, how many packages need replacing and how much native code it has. That's why we start with a free assessment and give you a fixed price before any work begins.

How long does an upgrade take?

An app that's only a few versions behind can take days. Apps that are years behind or rely on custom native code take longer. You'll get a timeline together with your quote.

Can you upgrade an app someone else built?

Yes. We need access to the source code and anything required to build it, such as signing configuration and environment files.

Will the upgrade change how the app looks or works?

The goal is the same app on current foundations. If a replaced package or a platform change affects behavior, we flag it in the plan and agree it with you first.

What if a package we depend on has no maintained version?

We replace it with a maintained alternative, fork and patch it, or re-implement the feature — whichever is safest — and the plan tells you which.

Do you need access to our App Store and Google Play accounts?

Not for the upgrade itself. If you'd like help with the release, you can grant access in App Store Connect and Google Play Console and revoke it at any time.

Find out what's blocking your upgrade

Tell us about your app and where it's stuck. The assessment is free, and you'll know the fixed price before anything starts.

Get a free upgrade assessment
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