elonovo
CheckLang 1.0
Review app translations and share feedback
CheckLang helps translators, QA reviewers, and localization teams review macOS app translations.
Pick any installed app from your Applications folder and CheckLang scans its localization files to show every string side by side with the original language. Browse languages in the sidebar, search and filter the list, and add your own suggestions and comments directly in the table. When you are done, export your feedback as CSV or PDF and send it to the developer team.
CheckLang is built for real-world localization review: it focuses on the standard Localizable.strings files used by most Mac apps, keeps your recent apps handy, and remembers where you left off. Whether you are proofreading a French release, checking missing translations, or collecting feedback from native speakers, CheckLang turns a scattered review into a clear, shareable report.
Simple, focused, and free, CheckLang is the easy way to review app translations on your Mac and help developers to get it right.
Version 1.0.
Minimum OS required: macOS 14 or later versions.
Universal binary optimized for Intel and Apple Silicon processors.
Notarized by Apple secure service to prevent malware. English version only.
Main features
Review any Mac app
Open installed apps from your Applications folder without needing Xcode or project accessAutomatic string discovery
Finds and loads localizable.strings files across all language folders in the app bundleSource and translation side by side
Compare the original language with each localized version in one clear tableInline suggestions and comments
Add better translations and notes directly in the review tablePowerful search
Search across keys, source text, translations, and your feedback with flexible scope optionsSmart filters and sorting
Focus on missing strings, entries with suggestions, developer notes, and moreExport for developers
Share your review as CSV or PDF, including only changed items or the full string listRecent apps and session memory
Quickly reopen apps you’ve reviewed and return to the last language you were working onReload from the app bundle
Refresh localizations after an app update without choosing the app againBuilt for reviewers, not developers
A simple, sandboxed workflow designed for translators, QA teams, and native speakers
Frequently Asked Questions
View Changelog
Screenshots
These screenshots were taken on macOS 26 Tahoe. If you're using an earlier version of macOS, the interface is a bit different.
Built for modern macOS versions
This app is fully optimized for
macOS 14 Sonoma, macOS 15 Sequoia and macOS 26 Tahoe
We can add custom features for your brand
Contact us to get a quote with the custom features you are looking for
