String Catalog - Automate iOS & Android Localization

How It Works

Three steps and you're done
Let String Catalog handle localization

Take the manual work out of the usual Xcode and Android string updates.

Connect your repo

Choose your languages

Choose up to 40 languages, add tone or glossary notes when you need them, then click "Localize" and let us do the heavy lifting.

Review the pull request

We raise a pull request with the new strings. Review it in GitHub, merge, and we'll open another one any time the source text changes.

Time saved per release

More time saved = More features shipped

See how much development time you get back with each localization approach

Best choice String Catalog

Up to 12 hours saved per release

Set it up once and get back to the work that matters

✓ Zero maintenance
✓ Always up to date
✓ Custom tone & glossary
✓ Format validation
✓ Best practices built-in
✓ Just 15 minutes total

Custom localization scripts

~7-9 hours saved per release

Write a script, keep patching it forever

⚠️ Script maintenance
⚠️ API version updates
⚠️ Bug fixes & edge cases
⚠️ Format changes
⚠️ Team onboarding
⚠️ Takes 3-5 hours

Manual localization

0 hours saved per release

Painful every single time

❌ Extract strings manually
❌ Spreadsheet management
❌ Email back-and-forth
❌ Format validation
❌ Copy-paste errors
❌ Takes 8-12 hours

That's 6+ weeks of dev time saved each year for a typical indie app

Based on monthly releases to 10+ languages. More releases = more time saved.

Why teams choose String Catalog

Maximum time savings with zero maintenance burden
Costs less than a few hours of developer time per month
Always up-to-date with platform changes

Why in-house scripts add up

Homegrown scripts break whenever Apple or Google tweaks formats. The "quick fix" turns into hours of upkeep that drags you away from product work. String Catalog keeps pace so you don't have to.

600+

Hours saved annually

Zero

Maintenance required

100%

Fewer release-day surprises

Start reclaiming release hours

Built for the teams shipping every week

The pieces we rely on to keep translations moving

Pull requests come quickly

Automated PR generation in seconds, not hours

Real platform files

We work directly with .xcstrings and strings.xml, no brittle conversion scripts.

AI double-checks translations

Our checker reviews each translation for placeholders, tone, and obvious slips.

Built for teams

Reviewers, product, and localization can all leave context in one place.

iOS Development

Fits right into Xcode

We read and write Apple's String Catalog format with comments, notes, and device variations intact. No exports, no sync scripts, just the files Xcode expects.

Preserves all String Catalog metadata
Handles device-specific variations
Uses per-string comments as translation context

Android Development

Built for Android projects

We generate strings.xml with plurals, placeholders, and all the Android quirks your app already uses. Comments stay in place so translators understand the intent, and it works with Gradle or Maven.

Supports plurals and quantities
Supports placeholders
Gradle and Maven compatible

Ready to localize your app?

Join the teams relying on String Catalog to keep translations caught up.

Start free trial Talk to us

1 Free Language • No credit card required

Automate iOS & Android localization.

As Seen On

Three steps and you're done
Let String Catalog handle localization

Connect your repo

Choose your languages

Review the pull request

More time saved = More features shipped

Custom localization scripts

Manual localization

Why teams choose String Catalog

Why in-house scripts add up

Built for the teams shipping every week

Pull requests come quickly

Real platform files

AI double-checks translations

Built for teams

Fits right into Xcode

Built for Android projects

Ready to localize your app?

Three steps and you're done Let String Catalog handle localization

Connect your repo

Choose your languages

Review the pull request

More time saved = More features shipped

Custom localization scripts

Manual localization

Why teams choose String Catalog

Why in-house scripts add up

Built for the teams shipping every week

Pull requests come quickly

Real platform files

AI double-checks translations

Built for teams

Fits right into Xcode

Built for Android projects

Ready to localize your app?

Three steps and you're done
Let String Catalog handle localization