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Privacy policy

Gomi Sensei collects almost nothing about you. That is the policy. The rest of this page is only the proof.

One account, for Discover only

Studying needs no account. The Discover tab, the short videos, asks you to sign in with Apple, Google or an emailed code. That account holds your email address and, if you give one, your name. It is a Tsumida AI account, the same one our other apps use, kept on our server in Tokyo. It also records how long each Discover video played, which is how the feed learns what to show you next, and is used for nothing else. It never holds your study progress: what you study stays on your phone either way. Delete it from Settings in the app (or without the app), and it and those records are gone from every Tsumida AI app at once.

No outside analytics, no ads

No tracking across other apps, no crash reporting, no advertising, no third party kits of any kind. Your data is not sold or shared.

What the app remembers

The name you typed, your level, which words you have seen, what is in your bin, your streak. All of it is written to storage on your own phone and it stays there. Delete the app and it goes too. "Start over" in Settings does the same thing whenever you like.

The one network request

Gomi Sensei can check whether a corrected word list exists. In the app you downloaded that check is switched off: it ships with no server address, so there is nothing for it to call. If a future build turns it on, it runs only when you tap it yourself on the You screen.

Even then it carries no identifier and nothing about your progress. It asks for a file of Japanese words and reads the answer. A server would see your IP address, the way every server sees every request from every app.

Nothing else is touched

No microphone, no camera, no location, no contacts, no photos. The voice you hear is recordings stored inside the app, not a recording of you. A word with no clip is read out by your phone's own speech engine, which is between you and your operating system.

Nobody can reach you here

No messages, no comments, no profiles, no other people. The words you keep forgetting stay strictly between you and the bin.

The old Android list on this website

The app collects nothing. Until the Android app came out, the front page had a form for it. If you typed your address in, we stored that address, the date, and the country the request came from, so that we could write to you once when it was out. It is not sold, not shared, and not used for anything else. Ask and it is deleted.

If this changes

The date below changes with it, and this page is replaced.

Questions, complaints, corrections: hello@gomi-sensei.com. A person reads it. There is more on the support page, including how to delete everything, and the terms of use.

Last updated: 31 October 2026.

That was the entire policy. means garbage, and it still fits on one screen.