Sumi: AI Manga Translator

Sumi: AI Manga Translator

Translate raw manga in Safari

3 ratings
1 review
Free
In-App Purchases

Details

  • Released
  • Updated
  • June 16, 2026
  • August 12, 2026

Features

Sumi: AI Manga Translator video #1 for iPhone
Sumi: AI Manga Translator screenshot #2 for iPhone
Sumi: AI Manga Translator screenshot #3 for iPhone
Sumi: AI Manga Translator screenshot #4 for iPhone
Sumi: AI Manga Translator screenshot #5 for iPhone
Sumi: AI Manga Translator screenshot #6 for iPhone
Sumi: AI Manga Translator screenshot #7 for iPhone
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About

This app uses AI to translate manga, ebooks, and web pages you own. It intelligently cleans original text and re-typesets in your language, preserving vertical Japanese. Learn new words with an integrated dictionary and spaced repetition system.

AI-assisted text translation
Original text cleaning and re-typesetting
Import various file formats (PDF, EPUB, ZIP)
In-app browser for web page translation
Offline dictionary and spaced repetition
Cloud and offline translation options
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What's New in Sumi

1.0.8

August 12, 2026

• Offline translation, reworked: Sumi now auto-configures the strongest model your device can run — zero setup • Model downloads are now several times faster on slow connections • Fixed a crash that could occur when starting offline translation • Language names now follow your app language • Send feedback to us right from Settings • Stability and polish throughout

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In-App Purchases

$9.99

Offline Translation

Translate manga offline forever. No internet needed.

User reviews

Ipad26.6bug, I use offline translation

1. Click to import the folder 100% flashback
2. Clicking to delete all local data in the settings will cause the app to be unable to use next time, and the white screen will flash back.
3. Click the import symbol on the comic tab. There is no return key. You must import it to go back. Click to view all without a return key.
4. The imported comics are not edited in the comics tab, cannot be deleted, and cannot be read.
5. Comic translation cannot be freely selected whether to translate or not. After importing, the translation will start automatically and cannot be suspended.
6. The translation heat is too serious, the power drops too fast, and the equipment may be seriously stuck, which needs to be optimised.
7. I hope to provide emails or add a telegram group in the app to facilitate feedback.
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Response from developer

Thank you for the detailed report. We are sorry for the trouble. Most of what you listed — the crashes, the missing back buttons, the problems with imported comics, and translation starting on its own — is already fixed in the update we are shipping next, and we are still working on the heat and battery drain. If you run into anything else, or have suggestions for us, please write to hello@mangasumi.com or go to mangasumi.userjot.com. We read everything. We will keep improving Sumi. Thank you for your support. — The Sumi team

Developer apps

FAQ

Does Sumi have ads?

No, Sumi does not contain advertisements. The app is free to download and offers in-app purchases for additional translation pages or unlimited offline translation.

How much does Sumi cost?

Sumi is free to download and use for the first 30 pages. After that, you can purchase page packs starting at $1.99 for 200 pages, or buy a one-time unlock for unlimited offline translation.

What devices does Sumi support?

Sumi is available for iPhone and iPad, and also works on Apple Silicon Macs. It supports features like drag-and-drop import and keyboard shortcuts on compatible devices.

How often is Sumi updated?

The latest version of Sumi is 1.0.6, which was last updated on July 26, 2026. Updates typically focus on improving translation accuracy and adding new features.

Can I use Sumi offline?

Yes, Sumi offers an offline mode. You can download a model pack once and translate content directly on your device without sending page images to the cloud.

What languages can Sumi translate?

Sumi is designed to translate manga, which often includes Japanese. It also supports vertical CJK typesetting and offers word lookups with an offline dictionary.

Is Sumi suitable for younger users?

Sumi has an age rating of 17+, indicating it is intended for mature audiences. This is likely due to the nature of some manga content and the complexity of the translation features.

How does Sumi handle original text?

Sumi intelligently detects original text areas, cleans the lettering, and re-typesets the translated text in its place, preserving the original layout and vertical Japanese where applicable.