String Catalog Alternative: One-Time Credits vs a Monthly Subscription

The real difference is the pricing model and how files move, not which product wins. String Catalog is a git-native subscription: you connect GitHub, GitLab or Bitbucket, translations arrive as pull requests, and string updates are unlimited inside a base-key cap. Localize Your App sells one-time credit packs that never expire, where one credit translates one string into one language, through upload and download. String Catalog is a good product built around a real shipping workflow. Choose it when localization belongs in git and copy changes every release. Choose credits when you want to pay once for a pass and never see a recurring bill.

When String Catalog is the better choice

If localization is already part of how you merge code, do not switch away from it just to avoid a subscription. Source strings live in the repo, automation proposes translations, you review a pull request, you merge. That is a coherent loop, and it is the whole product rather than a bolted-on integration.

It is the better buy when most of these are true:

• You add or edit strings continuously. Paid tiers include unlimited string updates inside the base-key limit, so a changed key does not cost again.
• You want translations reviewed as pull requests on GitHub, GitLab or Bitbucket.
• You ship localized release notes. The entry tier includes twenty a month; the higher tiers remove the cap.
• You need store metadata localization, human translation QA with review links, or accuracy monitoring. Those sit on the middle and top tiers, not the entry one.
• You run more than one app. Unlimited apps are included at every paid tier.
• You want a fixed language set with no per-language line item. All 40 languages are included at every paid tier, and the key limits count base-language source strings only.

Pricing checked 28 August 2026 on String Catalog's own pricing page: Hobby $15/mo (or $144 a year, effectively $12 a month) for 3,000 base string keys; Pro $45 a month or $432 a year for 7,500 keys; Business $75 a month or $720 a year for 15,000 keys. Annual billing saves 20%, and there is a free tier covering one language. Formats are .xcstrings and Android strings.xml, plus release notes and store metadata.

When one-time credits work out cheaper

Do the arithmetic before calling either option cheap. A Hobby subscription is $180 across a year billed monthly, or $144 billed annually. Pro is $540 or $432. Business is $900 or $720. Localize Your App credit packs are bought once — Starter $9, Indie $25, Studio $45 — and the credits do not expire.

Credits are cheaper when you localize a reasonably stable string set and then stop. You pay once, keep whatever you did not spend, and are not billed in month thirteen for strings you never touched. Across a quiet two years that is $288–$360 on Hobby against a single pack.

The case against, which is just as real: if you ship string changes continuously you are re-buying credits every time. A credit is one string into one language, so editing 80 keys across 12 languages is 960 credits — again — because the earlier spend does not cover new text. Do that several times a year and the packs can add up past $144. Hobby includes unlimited string updates inside 3,000 base keys, so the subscription can genuinely cost less over time when copy is not frozen. "One-time" only wins while strings × languages × edit rounds stays small: credits scale with that product, a subscription scales with the calendar.

Pull requests against upload and download

String Catalog is git-native, and the path from automation to main runs through a pull request. Protected terms travel with that pipeline.

Localize Your App is upload-and-download: bring a file, spend credits, take files back, commit them yourself. It handles a wider format list — .strings, .xcstrings, strings.xml, .arb, i18n JSON and XLIFF against String Catalog's .xcstrings and strings.xml — but it has no CLI, no CI/CD integration, no git sync, no pull-request review, no human translators for hire, no release-note automation and no accuracy monitoring. If you need those you are buying a different workflow, not a cheaper version of the same one.

Do not let the language counts mislead you. String Catalog includes 40 languages at every paid tier. Apple's App Store supports 50 metadata localizations as of 31 March 2026. Those are not the same measurement: 40 is in-app language coverage on a plan, 50 is a store metadata slot count. Switching tools does not convert one into the other. The App Store language guide keeps the two apart properly.

Moving between them

The overlapping formats are .xcstrings and strings.xml. Those files move cleanly. Very little else does.

Moving to String Catalog: put the files in a connected repo and review translations as pull requests. Rebuild release-note and metadata flows there — nothing imports from a credit-based tool. The free single-language tier is a reasonable way to verify the pull-request path before paying.

Moving to Localize Your App: export .xcstrings or strings.xml, upload, spend credits, download, commit. You take on the file movement yourself. Credits you have already bought keep sitting there, but a String Catalog subscription does not convert into credits, and protected terms, QA review links and accuracy monitoring have no counterpart to migrate.

For a solo iOS or Android developer the decision is close to mechanical. If strings change with every release and you already merge through git, stay with String Catalog. If you want a single paid pass across a wider set of formats with no recurring charge, credits fit — as long as you count every later edit as a fresh spend. The full tools roundup puts both against the rest of the market, and the cost guide runs the same arithmetic for agencies and enterprise platforms.

Frequently asked questions

Is Localize Your App a String Catalog alternative?

Only for file translation. String Catalog is a git-native subscription with pull-request review; Localize Your App is one-time credits with upload and download. They are different operating models rather than competing versions of the same thing.

When should I choose String Catalog instead?

When you review translations in GitHub, GitLab or Bitbucket pull requests, when you update strings continuously, or when you need localized release notes and store metadata. That workflow is what the product is built around.

How does a $15 a month plan compare with a one-time credit pack?

Hobby is $180 across a year billed monthly, or $144 billed annually. Credit packs are paid once and never expire. Credits win while your copy is stable; continuous edits re-buy credits each round and can total more than the subscription.

Do both tools handle .xcstrings and Android strings.xml?

Yes. String Catalog covers those two plus release notes and store metadata. Localize Your App also handles .strings, .arb, i18n JSON and XLIFF, but has no git sync, CLI or CI/CD integration.

Does the App Store supporting 50 localizations beat String Catalog's 40 languages?

No, and conflating the two would be misleading. Forty is in-app language coverage included on every paid String Catalog tier. Fifty is the number of metadata slots Apple offers in App Store Connect. Switching tools does not turn one into the other.