Terms of use

Updated on September 25, 2026. These terms apply to the Jiyomi app (Android and iPhone) and to the site jiyomi.app, published by Dorian Souc (sole proprietor (entrepreneur individuel), SIREN 939 245 189). Using them means accepting them.

What Jiyomi does

Jiyomi reads a page of Japanese photographed with the phone, splits it into sentences and words, and shows furigana, the dictionary and the grammar. All of that is free, unlimited and runs on the phone. Help from an artificial intelligence — translating a sentence, explaining it, re-reading a sentence or a page from the photo — goes through our server and is paid in glyphs.

Glyphs

• One glyph pays for a translation, an explanation or a re-read sentence; ten pay for a page re-read by the AI. The price is shown in the app before each request.
• Subscription glyphs are credited every month, up to the plan’s quota, and do not roll over. They reset on the 1st of each month.
• Top-up glyphs (one-time purchase, no subscription) never expire, are not reset, and are spent after the month’s glyphs.
• A request the AI does not answer costs nothing: the glyph is returned. The same request, asked again by the same account, is free.
• Glyphs cannot be refunded for money, transferred or exchanged. They belong to the Jiyomi account that received them.

Subscriptions

• The plans, their glyph quotas and their prices are those shown in the app and in the store (App Store or Google Play), in your store account’s currency, taxes included.
• A subscription is monthly or yearly. It renews automatically at the end of each period, at the same price, unless cancelled at least 24 hours before the end of the current period in the store settings (Apple: Settings → your name → Subscriptions; Google: Play Store → Payments & subscriptions → Subscriptions).
• Payment is charged by the store at purchase, then at each renewal. The store invoices, handles payment methods and applies its own refund rules; Jiyomi has no access to that information.
• Once cancelled, a subscription stays active until the end of the period already paid; there is no pro-rata refund.
• A subscription is attached to your Jiyomi account. To get it back on another phone, use “Restore purchases” in the app with the same store account, and the Apple or Google sign-in if you linked one.
• Prices may change. A price change on a running subscription is announced by the store before it applies, under its rules.

Top-ups

A top-up is a one-time purchase, with no commitment, that credits your Jiyomi account with the number of glyphs stated on the product. It is credited once per transaction, as soon as the store confirms it to us (usually a few seconds after the purchase).

Your account

• The app creates an anonymous account on first launch. You can link it to an Apple or Google account to find it elsewhere, and delete it at any time in the app settings. Deleting the account erases its glyphs; it does not stop a subscription, which is cancelled in the store.
• The account, subscriptions and top-ups are for people aged 15 and over, or with a parent’s consent.
• Abusive use (scripts, circumventing limits, reselling glyphs) may lead to the AI help being suspended for that account.

AI help

Translations, explanations and re-readings are produced by an artificial-intelligence model. They are provided as is, to help reading, and may contain errors: the app flags what it does not recognise, but does not guarantee that a translation is correct. The excerpts sent to the AI are the ones you choose to send; see the Privacy page.

Availability

Jiyomi is made by one person. The service is provided without a guarantee of continuous availability; the AI help may be paused during an outage or when a spending cap is reached, and glyphs are then not taken. Reading, furigana, the dictionary and the grammar keep working offline.

Intellectual property

The name Jiyomi, the mascot Jiyo and its companions, and the code and design of the site and app belong to the publisher. The dictionary is a derivative work under CC BY-SA licences (see About). The pages you photograph remain their authors’ and publishers’: Jiyomi is for reading them, not for redistributing them.

Governing law

These terms are governed by French law. In case of a dispute, and if no amicable solution is found (contact@jiyomi.app), French courts have jurisdiction. Consumers may also turn to a consumer mediator under the French Consumer Code.

Contact

contact@jiyomi.app. See also the legal notice and the Privacy page.