FlutterLocalisation vs Localizely: Which Flutter Localization Tool Is Right For You?

Choosing the right localization tool can make or break your Flutter app's internationalization workflow. In this comparison, we'll examine FlutterLocalisation and Localizely side-by-side to help you make an informed decision.

Quick Comparison

Feature	FlutterLocalisation	Localizely
Built for Flutter	Yes (Flutter-first)	No (generic platform)
Free tier	Yes	Yes (250 strings)
Starting price	€29/month (€249/year)	$16/month
AI translation	Yes (context-aware)	Machine translation
Git integration	GitHub, GitLab, Bitbucket	GitHub, GitLab, Bitbucket
ARB native support	Primary format	Supported format
ICU message format	Full support	Full support
Over-the-air updates	Yes (Live Updates)	Yes
Translation memory	Yes	Yes (Organization plans)

What Is FlutterLocalisation?

FlutterLocalisation is a localization platform built specifically for Flutter developers. It focuses on the ARB file workflow and provides AI-powered translations that understand Flutter's ICU message format.

Key strengths:

• Purpose-built for Flutter's ARB format
• AI translations with context awareness
• Visual side-by-side editor
• Automatic placeholder validation
• Direct Git synchronization

What Is Localizely?

Localizely is a general-purpose translation management system (TMS) that supports multiple platforms including Flutter, iOS, Android, and web applications.

Key strengths:

• Multi-platform support
• Over-the-air translation updates
• Professional translator workflows
• Translation memory (paid plans)
• Figma integration

Detailed Comparison

1. Flutter-Specific Features

FlutterLocalisation was designed from the ground up for Flutter developers:

// FlutterLocalisation understands Flutter's ARB format natively
{
  "itemCount": "{count, plural, =0{No items} =1{One item} other{{count} items}}",
  "@itemCount": {
    "placeholders": {
      "count": {"type": "int"}
    }
  }
}

The platform validates placeholders, ICU message syntax, and generates Flutter-compatible ARB files without additional configuration.

Localizely is platform-agnostic. While it supports ARB files, Flutter is one of many supported formats. You may need to configure export settings to ensure compatibility.

Winner: FlutterLocalisation — Purpose-built beats generic.

2. AI Translation Quality

FlutterLocalisation uses context-aware AI that:

• Understands placeholders like {username} and preserves them
• Handles plural forms correctly across languages
• Maintains ICU message format syntax
• Learns from your app's context

Localizely offers machine translation through Google Translate and DeepL integration. While effective, it doesn't have Flutter-specific intelligence built in.

Winner: FlutterLocalisation — AI that understands Flutter's syntax.

3. Pricing Comparison

FlutterLocalisation Pricing:

• Free: 2 projects, 3 members, 500 translation keys
• Starter: €29/month (€249/year) — 6 projects, 8 members, 15,000 keys, AI, Git sync, live updates
• Growth: €89/month (€749/year) — 20 projects, 25 members, 75,000 keys
• Business: €249/month (€1,990/year) — unlimited projects, 100 members, 300,000 keys

Localizely Pricing:

• Free: 250 string keys, 1 project
• Starter: $16/month — 500 keys, 1 project
• Advanced: $32/month — 1,000 keys, 2 projects
• Pro: $65/month — 2,500 keys, 3 projects
• Organization: $125-475/month — Enterprise features

Winner: FlutterLocalisation — Far more keys for the money: 15,000 keys at €29/month, where Localizely's $32 tier stops at 1,000.

4. Git Integration

Both platforms offer Git integration:

FlutterLocalisation:

• Connects to GitHub, GitLab, Bitbucket
• Two-way sync with your repository
• Automatic ARB file updates on push
• PR-based workflow support

Localizely:

• Same Git providers supported
• Pull/push translations
• Branching support (Organization plans)

Winner: Tie — Both offer solid Git workflows.

5. Team Collaboration

FlutterLocalisation:

• Role-based access (Developer, Translator, Reviewer)
• Real-time collaborative editing
• Comment and discussion threads
• Activity tracking

Localizely:

• Unlimited users on all plans
• Task assignments
• Translation review workflow
• Activity history

Winner: Tie — Both handle team workflows well.

6. Over-the-Air Updates

Localizely has a clear advantage here with their Flutter SDK for over-the-air (OTA) translation updates. This lets you push translation fixes without releasing a new app version.

FlutterLocalisation currently focuses on build-time translations through ARB files. OTA support is on the roadmap.

Winner: Localizely — OTA is a killer feature for production apps.

7. Learning Curve

FlutterLocalisation:

• Sign up → Connect Git → Import ARB → Translate
• Familiar Flutter workflow
• No complex configuration
• 5-minute setup

Localizely:

• More features = more complexity
• Enterprise-focused interface
• May require training for team members
• Configuration needed for Flutter optimization

Winner: FlutterLocalisation — Simpler, Flutter-focused UX.

When to Choose FlutterLocalisation

Choose FlutterLocalisation if you:

• Build exclusively Flutter apps
• Want AI-powered translations that understand Flutter syntax
• Need a simple, focused workflow
• Have a small to medium team
• Want the best value for money
• Prioritize developer experience

Ideal for: Solo developers, startups, small teams, Flutter agencies.

When to Choose Localizely

Choose Localizely if you:

• Build multi-platform apps (Flutter + iOS native + web)
• Need over-the-air translation updates
• Work with professional translators who need TMS features
• Require enterprise features like branching and Figma integration
• Have budget for higher-tier plans

Ideal for: Enterprises, multi-platform projects, teams with dedicated translators.

Migration: Switching Between Platforms

From Localizely to FlutterLocalisation

1. Export your translations as ARB files from Localizely
2. Create a project in FlutterLocalisation
3. Import your ARB files
4. Connect your Git repository for ongoing sync

From FlutterLocalisation to Localizely

1. Export ARB files from FlutterLocalisation (or pull from Git)
2. Create a project in Localizely
3. Import the ARB files
4. Configure your Flutter export settings

Both platforms use standard ARB format, making migration straightforward.

Real-World Scenarios

Scenario 1: Solo Developer with a Side Project

Recommendation: FlutterLocalisation Free Tier

You need quick AI translations for a few hundred strings. FlutterLocalisation's free tier gets you started immediately, and the AI handles the heavy lifting.

Scenario 2: Startup with 5 Developers

Recommendation: FlutterLocalisation Starter

At €29/month (or €249/year), you get 8 team members, 15,000 keys, AI translation, Git sync and live updates. Localizely's Advanced tier costs $32/month and stops at 1,000 keys.

Scenario 3: Enterprise with iOS, Android, and Flutter Apps

Recommendation: Localizely Organization

You need one platform for all your apps, professional translator workflows, and enterprise features. Localizely's multi-platform support makes sense here.

Scenario 4: App in Production Needing Hot Fixes

Recommendation: either, both have over-the-air updates

FlutterLocalisation Live Updates (Starter and above) and Localizely OTA both fix translation typos without an app release.

The Verdict

For most Flutter developers, FlutterLocalisation is the better choice.

Here's why:

1. Purpose-built — Every feature is designed for Flutter's ARB workflow
2. Better AI — Context-aware translations that understand Flutter syntax
3. More for the money — 15,000 keys for €29/month vs 2,500 keys for $65/month
4. Simpler UX — Less time configuring, more time building

However, choose Localizely if:

• You need over-the-air updates (deal-breaker feature)
• You're managing multiple platforms beyond Flutter
• Your organization requires enterprise TMS features

Try Both Free

The best way to decide is to try both:

• Start free with FlutterLocalisation — No credit card required
• Start free with Localizely — 15-day trial of all features

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Ready to simplify your Flutter localization? Try FlutterLocalisation free — the localization tool built by Flutter developers, for Flutter developers.