FlutterLocalisation - Translate Flutter App to Multiple Languages

Trusted by Flutter teams shipping to the world

platforms, one codebase

40+

languages, AI-translated

to ship a copy fix live

MIT

licensed, offline core

Everything you need

One platform for the whole
localization lifecycle

From the first key to a live update on your users' devices — translation, code, and shipping in one place.

AI-powered translation

Translate every string into any language in one click. Context-aware — it understands UI and technical terms.

Type-safe code generation

Turn ARB files into strongly-typed Dart. Autocomplete every key, catch typos at compile time.

Package

Live over-the-air updates

Fix a typo or ship a new locale without an App Store release. Updates land at runtime in seconds.

Live

One-command CLI

Pull, regenerate type-safe classes, and sync — all from a single terminal command in your CI or IDE.

CLI

Claude CLI & MCP server

Add keys, translate, and open PRs straight from Claude. An MCP server drives your whole workflow.

MCP

Git integration

Two-way sync with GitHub, GitLab & Bitbucket. Your .arb files stay in version control, auto-committed.

Git

Team collaboration

Invite developers, translators, and reviewers with role-based permissions. Everyone works together.

Teams

Flavors & variants

Ship white-label or multi-environment apps. Each flavor gets its own set of translations.

Flavors

ICU plurals & placeholders

Structured editing for plurals, select/gender, and typed placeholders — no hand-writing ICU syntax.

ICU

AI Translation

Translate your whole app in one click

Our AI understands app context — button labels, error messages, technical terms — and produces natural, on-brand translations you can review and refine.

Context-aware — knows the difference between "Home" the screen and "Home" the address.
Preserves placeholders and ICU plural forms automatically.
Translation memory keeps terminology consistent across releases.

Start translating with AI

AI · translate all

🇬🇧

Source

Your order is on its way

🇪🇸Tu pedido está en camino

🇯🇵ご注文はまもなく届きます

🇩🇪Ihre Bestellung ist unterwegs

Visual Editor

Edit translations visually, never in JSON

See every language side by side, edit inline with instant save, and spot missing translations at a glance — no more wrestling with .arb syntax or merge conflicts.

Side-by-side language comparison with inline editing.
Missing-translation warnings so nothing ships half-localized.
Structured ICU editing for plurals, gender, and placeholders.

Translations · chat-bot

Key🇬🇧 English🇪🇸 Spanish

clear_chat_historyClear chat historyBorrar historial

type_a_messageType a message…Escribe un mensaje…

chat_greetingHi, how can I help?Hola, ¿cómo puedo ayudar?

items_count{count, plural, one{1 item} other{# items}}Missing

Git Integration

Your .arb files stay where they belong

Connect GitHub, GitLab, or Bitbucket for full two-way sync. Edit in the dashboard and we commit back automatically — no copy-paste, no merge conflicts.

Connect your repository

Push a translation

github.com/your-org/chat-bot

Auto-commit .arb

chore(l10n): update 5 keys

Pull & generate

flutter_localisation arbs prod

For Developers

Your translations, as type-safe
as the rest of your code.

The flutter_localisation package turns ARB files into strongly-typed Dart, ships fixes over the air, and runs from one CLI command.

app_en.arb → type-safe Dartflutter_localisation v2.5.0

app_en.arb

{
  "itemCount": "{count, plural,
    =0{No items} =1{1 item}
    other{{count} items}}",
  "@itemCount": {
    "placeholders": {
      "count": { "type": "int" }
    }
  }
}

generates →

in your widget

// autocompleted · int-checked
Text(context.tr.itemCount(3));
// → "3 items"

Text(context.tr.greeting('Ada'));
// → "Hello, Ada!"

// rename a key? the compiler
// flags every call site.

✕AppLocalizations.of(context)!.itemCount

✓context.tr.itemCount(3)

No .of(context)! boilerplate. No stringly-typed keys.

Live / Over-the-air

Fix a typo in production. Live in seconds.

Push changes at runtime — no rebuild, no App Store review.

The old way

rebuild → submit → review · 1–3 days

With FlutterLocalisation

edit → publish → live · ~seconds

Live Cached locally, with automatic fallback to your bundled ARB if offline.

One-command CLI

Sync, generate & ship — in one line.

zsh — your-app

$ flutter_localisation arbs production

✓Pulled latest translations from Git

✓Regenerated type-safe Dart classes

✓Invalidated analyzer cache & ran flutter pub get

Done in 4.2s — 214 keys · 12 locales

6platformsone codebase

0App Store reviewsto ship a copy fix

MITlicensedfree, offline core

Runs oniOSAndroidWebmacOSWindowsLinux

MCP · Works with Claude

Localize your app from your AI agent.

The flutter_localisation_cli ships an MCP server, so Claude can add keys, translate them, and open a PR — without you leaving your editor.

Natural-language commands — "add a retry button label and translate it".
Full workflow access — read, edit, translate, and sync your ARB files.
One-line setup in any MCP-compatible client.

YouAdd a checkout.retry key ("Try again") and translate it into all 12 locales.

Claude✓ added key ✓ translated 12 locales ✓ opened PR #482

~/.claude — one-line setup

$ claude mcp add flutter-localisation \

-- npx flutter_localisation_cli mcp

✓MCP server connected · 7 tools available

Team Collaboration

Everyone in the loop, with the right access

Invite developers, translators, and reviewers with role-based permissions. Bring in external translators without handing over your whole project.

Invite your team

Ada Dev

Developer

Full access

María García

Translator · 🇪🇸 🇵🇹

Edit ES, PT

Kenji Tanaka

Reviewer · 🇯🇵

Review only

Invite a translator

Flavors & Variants

One project, many builds

Ship white-label apps or dev / staging / production variants from a single project. Each flavor keeps its own translations and pushes to its own target.

Per-flavor overrides with a shared base.
Generate a typed class per flavor from one command.

Flavors

default

com.yourco.app

46 langs

premium

com.yourco.app.pro

40 langs

whitelabel

com.client.retail

12 langs

Analytics

Know you're 100% before you ship

Track translation coverage per language, watch progress in real time, and catch gaps before a release — not after a 1-star review.

See your coverage dashboard

Translation coverage▲ 12% this week

🇬🇧English

100%

🇪🇸Spanish

100%

🇩🇪German

86%

🇯🇵Japanese

72%

🇧🇷Portuguese

54%

Free online tools

Handy Flutter i18n tools — free, no signup

A little toolbox we built for the community. Use them standalone, or as your on-ramp to the full platform.

ARB Editor

Edit .arb files in a clean visual UI, right in your browser.

Free

ARB Diff

Compare two ARB files and spot added, removed, and changed keys.

Free

l10n.yaml Generator

Generate a correct Flutter l10n.yaml config in seconds.

Free

Locale Explorer

Browse every Flutter locale, with codes and native names.

Free

Why switch

FlutterLocalisation vs. the manual way

What you do	FlutterLocalisation	Hand-rolled workflow
Translate a new locale	One-click AI, review later	Copy each string into Google Translate
Access keys in code	Type-safe `context.tr.key`	Stringly-typed, typo-prone lookups
Ship a copy fix	Live in seconds, over-the-air	New build → App Store review → days
Keep .arb in Git	Auto-commit two-way sync	Manual copy & commit each time
Work with translators	Role-based, in-app	Email spreadsheets back and forth
Automate from Claude	MCP server, built in	— Not possible

Pricing

Start free. Scale when you grow.

Every paid plan includes AI translation, Git sync, live updates, and the full CLI.

Free

€0/mo

For indie devs getting started.

Start free

2 projects · 3 members
1,000 translations
All free online tools

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FAQ

Questions, answered

What is FlutterLocalisation, exactly?

Two things that work together: an MIT-licensed Flutter package that generates type-safe localization from your ARB files (and can fetch live updates), plus a web platform for AI translation, team collaboration, Git sync, and analytics. Use the package free and offline, or add the platform for the full workflow.

Do I have to change how my Flutter app loads translations?

No. It builds on Flutter's standard ARB + intl approach. You get a typed context.tr accessor, and optionally live updates — all backed by your existing .arb files.

How do live over-the-air updates work?

The package fetches the latest translations at runtime, caches them locally, and falls back to your bundled ARB if the device is offline. So you can fix a typo or add a locale and it reaches users in seconds — no new app build, no store review.

Which Git providers are supported?

GitHub, GitLab, and Bitbucket, with full two-way sync. Edit in the dashboard and we commit the updated .arb files back to your repo automatically.

What can Claude do through the MCP server?

The flutter_localisation_cli ships an MCP server, so Claude can read your keys, add new ones, translate them, and sync — all from natural-language prompts in any MCP-compatible client.

Is there really a free plan?

Yes — the package is free and MIT-licensed forever, and the platform's free plan covers small projects with no credit card required. Upgrade only when your team grows.

Ship your Flutter app
in every language.

One platform for the whole
localization lifecycle

AI-powered translation

Type-safe code generation

Live over-the-air updates

One-command CLI

Claude CLI & MCP server

Git integration

Team collaboration

Flavors & variants

ICU plurals & placeholders

Translate your whole app in one click

Edit translations visually, never in JSON

Your .arb files stay where they belong

Your translations, as type-safe
as the rest of your code.

Fix a typo in production. Live in seconds.

Sync, generate & ship — in one line.

Localize your app from your AI agent.

Everyone in the loop, with the right access

One project, many builds

Know you're 100% before you ship

Handy Flutter i18n tools — free, no signup

ARB Editor

ARB Diff

l10n.yaml Generator

Locale Explorer

FlutterLocalisation vs. the manual way

Start free. Scale when you grow.

Get Flutter localization tips

Questions, answered

What is FlutterLocalisation, exactly?

Do I have to change how my Flutter app loads translations?

How do live over-the-air updates work?

Which Git providers are supported?

What can Claude do through the MCP server?

Is there really a free plan?

Ship your app in every language.

Ship your Flutter appin every language.

One platform for the wholelocalization lifecycle

AI-powered translation

Type-safe code generation

Live over-the-air updates

One-command CLI

Claude CLI & MCP server

Git integration

Team collaboration

Flavors & variants

ICU plurals & placeholders

Translate your whole app in one click

Edit translations visually, never in JSON

Your .arb files stay where they belong

Your translations, as type-safeas the rest of your code.

Fix a typo in production. Live in seconds.

Sync, generate & ship — in one line.

Localize your app from your AI agent.

Everyone in the loop, with the right access

One project, many builds

Know you're 100% before you ship

Handy Flutter i18n tools — free, no signup

ARB Editor

ARB Diff

l10n.yaml Generator

Locale Explorer

FlutterLocalisation vs. the manual way

Start free. Scale when you grow.

Get Flutter localization tips

Questions, answered

What is FlutterLocalisation, exactly?

Do I have to change how my Flutter app loads translations?

How do live over-the-air updates work?

Which Git providers are supported?

What can Claude do through the MCP server?

Is there really a free plan?

Ship your app in every language.

Ship your Flutter app
in every language.

One platform for the whole
localization lifecycle

Your translations, as type-safe
as the rest of your code.