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String Catalog
Free Tool: Calculate Your Localization Costs

App Localization
Cost Calculator

See which String Catalog plan fits your base string catalog. Adjust string count, languages, and release cadence—the translation work across up to 40 languages is always included.

Estimate My Cost Explore Pricing Plans

Sample Scenario

  • 🧩 5,000 base strings
  • 🌍 5 target languages
  • đź‘Ą 5 teammates collaborating
  • 🚀 2 releases per month with accuracy monitoring

$45/m

Pro plan · Team support + accuracy monitoring included

Calculate in seconds, share in a click

Enter your assumptions once, then copy the URL with query parameters to share a live plan recommendation with product, localization, and finance stakeholders.

Estimate your localization investment

Adjust the variables on the left to see which String Catalog plan fits your base string catalog and how the subscription breaks down per release.

Base string keys
Target languages

All plans include translations for up to 40 languages—no extra per-language fees.

Releases per month
Team size

Team support is included starting with the Pro plan. Invite collaborators without extra seats.

Accuracy monitoring

Enable if you need automated localization accuracy monitoring. Available on Pro and Business.

How we size plans

  • - Base string allowance is counted once—localized variants are unlimited.
  • - All plans include up to 40 languages with no additional cost.
  • - Monthly view divides the plan price across your release cadence.
  • - Pro and Business unlock team support plus accuracy monitoring.

Recommended plan

Pro

$45.00 per month · $432.00 yearly

Save $108 per year when billed annually (20% off)

PRO
View totals

Per release

$22.50

Plan price allocated across 2 releases.

Monthly

$45.00

Flat subscription—translations included.

Annualized

$432.00

Equivalent annual billing (translations still included).

What’s included

  • Unlimited localized strings across 5 languages.
  • Automated syncs for every push—no overages for frequent releases.
  • Team support: Included · Accuracy monitoring: Included.
  • Release notes localization: Unlimited (App Store, TestFlight “What to Test,” and Google Play updates)
  • Upgrade when your base string catalog grows past 7,500 keys.
Start Free Trial →

What drives app localization cost?

The more base-language strings you manage, the higher the tier you’ll need. Our calculator maps your string catalog to Hobby, Pro, or Business plan limits so you understand when to upgrade.
Frequent releases amplify the value of automation. Enter releases per month to see how your monthly spend breaks down per launch—ideal for planning sprint-based localization budgets.
All plans include translations for up to 40 languages. Use the calculator to forecast how adding more locales affects the recommended plan and total app localization price.
Need accuracy monitoring or multi-seat collaboration? Toggle those options in the calculator to see if you should move from Hobby to our Pro or Business tiers.
Localize App Store, Google Play, and TestFlight “What to Test” notes without extra fees. The calculator shows when you’ll hit the Hobby plan’s 20 note limit versus unlimited release-note localization on Pro and Business.