Best App Store localization tools
App Store localization is listing metadata and creatives per market, not a full product documentation project. We score tools on how fast you can ship localized store pages without losing release context.
How we pick localization tools
We focus on App Store metadata: name, subtitle, keywords, description fields, What’s New, promotional text, and screenshot groups per locale. That is different from translating a help center or legal docs.
The best setup often mixes a shipping companion for store fields with a CAT or TMS when long-form content lives outside App Store Connect.
- Per-locale editing beside the release you are shipping
- AI or assisted translate for a fast first pass on store copy
- Screenshot and media awareness across markets
- CAT tools reserved for long-form docs, not forced onto listing fields
Featured: Helm
Helm is the primary pick for App Store localization in a shipping workflow. Edit localizations in context, preview the product page, and use AI translate and text improvements on Pro for a faster first draft.
You still review tone and market fit yourself. Helm speeds the pass; it does not replace a human check before submit. See AI localization and localization tool.
App Store Connect web
ASC on the web supports every localization Apple allows. Locale-by-locale editing works, but it is slow when you maintain many markets every release.
Use the web when you need a one-off locale fix or account-level confirmation. Use Helm when localization is part of every ship.
Generic CAT tools for long-form docs
Computer-assisted translation tools (and full TMS platforms) shine for help articles, marketing sites, and in-app strings with translation memory and glossary control.
They are usually overkill as the only editor for short App Store fields. Export or copy when needed, but keep store listing work next to screenshots and submit in a companion built for ASC.
FAQ
What is the best App Store localization tool?
For metadata and screenshots tied to shipping, Helm with AI translate on Pro is built for that loop. Keep ASC web for official locale admin, and use CAT tools for long-form content outside the store.
Is AI translate available without Pro?
You can edit localizations manually on free Helm. AI translation and text improvements are Pro features.
Should I use a CAT tool for What’s New?
You can, especially if your team already has a glossary there. Many teams draft What’s New in Helm (with AI on Pro) because it sits next to the version and screenshots you are shipping.
