Vernac
Localize every listing, fast
Only for Mac
Free
Mac
Localize your listing, screenshots, app previews and Game Center in every language — then review each change before it reaches your draft.
Vernac turns the most tedious part of shipping an app — copying your App Store listing into every language, field by field — into a few clicks.
Connect your developer key and Vernac loads everything you localize: names, subtitles, descriptions, keywords, promotional text and what's new, your screenshots and app previews, and the parts most tools ignore — Game Center achievements, leaderboards, leaderboard sets, activities and challenges. Edit any language beside your source, translate with a click, and see exactly what will change before anything is written.
WHAT YOU CAN DO
• Localize every listing field, with live character counts and limit warnings.
• Translate on-device with Apple's Translation framework — one language, or all of them in one pass — or bring your own AI assistant.
• Choose how each field behaves: localized, left as it is, or the same in every language.
• Keep your brand words exactly as written with a glossary, and see where your 100 keyword characters go.
• Check Compliance flags price wording and product names in the fields where App Review won't accept them, in every language.
• Import screenshots and app previews for every language from one folder, set their order, and replace a set cleanly. Each video is checked against Apple's requirements before it is sent.
• Localize Game Center, and create achievements, leaderboards, sets, activities and challenges — with images for each — right from the app.
• Track a clear status per language, and see which text still needs a human look.
• Work across iOS, macOS, tvOS and visionOS, and sync a language from one platform to the others.
• Review a precise, field-by-field diff before you publish, behind a confirmation step.
BUILT FOR TRUST
• Vernac only ever writes to your editable draft. It never submits your app — you always do the final Submit yourself in App Store Connect.
• Excluding a language or changing a field's setting never deletes your work, and Vernac asks before anything unpublished would be lost.
• Your key stays in your Mac's Keychain. Nothing is collected, and there are no analytics or trackers.
FOR AUTOMATION (OPTIONAL)
• Vernac can host a private, loopback-only Model Context Protocol endpoint, so an AI assistant can drive the same features through a documented set of tools — long uploads included, with progress, even while you're away. Every write is previewed as a dry run first, and anything an assistant can do, you can also do by hand in the app.
Vernac uses the App Store Connect API to read and write your own content, and Apple's on-device Translation framework to translate it. Apple, App Store, App Store Connect, Game Center, Mac, and macOS are trademarks of Apple Inc. Vernac is an independent developer tool and is not affiliated with, endorsed by, or sponsored by Apple Inc.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Vernac 1.2 moves your media to App Store Connect's new Asset Library, adds iPhone Duo and the new product page art, and keeps working while you're away.
IPHONE DUO AND THE NEW MEDIA SLOTS
• Screenshots and app previews now use App Store Connect's Asset Library, with every size it lists — including iPhone Duo's inner and cover displays and both iPhone sizes with Dynamic Island.
• Add a product page header and a search results image or video for each language — or one file for both.
• Each file is uploaded once and reused wherever it's needed: across sizes, languages and later uploads.
• See which sizes are required, and which become required later, right beside each slot.
• When you replace media, Vernac can also remove the old files from your Asset Library once nothing else uses them.
SMARTER CHECKS
• Check Compliance now spots text in the wrong language — English left in a German field, Spanish in a Portuguese one — checked on your Mac.
• Too long for the limit? On a Mac with Apple Intelligence (macOS 26 or later), Fit with Apple Intelligence suggests shorter versions written on your Mac, each checked against the limit, your glossary and the listing rules, with a translation back into your own language.
• Translation uses Apple's higher-quality on-device models where your Mac has them, and checks that every glossary term comes through exactly as written.
WORKS WHILE YOU'RE AWAY
• Translate All runs in the background with live progress — keep working, or stop it at any time.
• On macOS 26 and later, translation works with Vernac's window closed.
• Vernac keeps your Mac from idle-sleeping while an upload, publish or translation runs, and lets it rest again the moment the work is done.
• Get a quiet notification when a long job finishes while you're in another app. Turn it off at any time.
SIRI AND SHORTCUTS
• Ask "Vernac status" or "Check compliance in Vernac", or open an app in Vernac from Shortcuts.
• "Translate all languages in Vernac" asks first, then runs Translate All — the translations wait for your review.
• "Publish my changes in Vernac" reads back what it would write, and publishes to your draft only after you say yes.
MORE LANGUAGES, BETTER COUNTS
• Adding Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Slovenian, Tamil, Telugu or Urdu to a listing now works, with the codes App Store Connect expects.
• Counts read naturally in every language Vernac speaks.
POLISH
• Publish and Transfers stay in the toolbar of a narrow window (macOS 26.1 and later), and a new Listing menu holds Refresh, Check Compliance and Publish.
• On macOS 27, the media and Game Center switchers appear as tabs.
• On macOS 27, drag screenshots and app previews into order with the system's own drag, and drop files from Finder exactly where they belong.
• Handing Vernac a folder never opens a second window.
FOR YOUR AI ASSISTANT
• New tools for creative assets and every media size, on-device shortening and notifications.
• Cancelling a job now stops a video mid-upload — or a translation waiting on a download — right away.
• Your assistant's connection survives a keychain hiccup: its access token is never replaced behind your back.
As always, Vernac writes only to your draft and never submits. The final Submit is yours.
The developer, Jeremy Littlewood, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jeremy Littlewood
- Size
- 10.3 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 15.0 or later.
- Mac
Requires macOS 15.0 or later.
- Mac
- Languages
English and 19 more
- English, Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Jeremy Littlewood
