Bushu Privacy Policy

There is no account, no sign-in, and no server. Bushu does not collect, transmit, sell, or share any personal information.

No analytics SDK and no crash-reporting SDK is built into the app. That is a property of the binary rather than a setting: the dependencies are absent, so there is nothing to switch on and nothing that could be enabled by a future configuration change without a new release.

Everything. Your decks and cards, review history and scheduling state, statistics, streak, settings, and any audio or images you attach to a card are written to a database in the app's private storage and nowhere else.

Deleting the app deletes all of it. About → Reset erases it without uninstalling. Neither sends anything anywhere, and neither is recoverable, because we never receive a copy - use the app's export feature if you want a backup you control.

Bushu does not use iCloud, Google Drive, or any other sync service.

None of these is Bushu reporting on you.

Importing a deck from a URL

If you paste a link into the URL importer, Bushu fetches that address to download the deck. It contacts only the address you typed, and only when you ask.

Opening a link

Tapping the maker credit or a source licence on the About screen hands the address to your browser. From that moment the site you opened is subject to its own privacy policy, not this one.

Reading a card aloud

The Listen button asks your device's own text-to-speech engine to speak the text on the card. Bushu passes the text to the operating system; what happens next is your device's behaviour, not Bushu's. Some system voices run entirely on-device and some are streamed from the platform vendor, Apple or Google, depending on your phone and which voices you have installed. An offline voice can be downloaded in your device's accessibility settings, and Listen can simply be left alone.

Fonts are bundled in the app and are never fetched at runtime.

Bushu asks for a permission at the moment you use the feature that needs it, never at launch, and every one can be refused without losing anything else.

• Microphone - only while recording a pronunciation into a card. The recording is saved to your device as part of that card.
• Photo library - only to attach an image to a card. Bushu reads the image you pick and never writes to your library.
• Files - only to read a deck you are importing, or to write one you are exporting.

Bushu does not use the camera and does not use location. On iOS a camera usage string appears in the app because the image-picking library includes camera support; Bushu never invokes it.

Bushu is suitable for all ages and collects nothing from anyone, of any age.

Bushu ships dictionary data from JMdict/EDICT, JmdictFurigana, CC-CEDICT, Unihan, the Unicode Character Database, KANJIDIC2, and KanjiVG. This is reference data included in the app, not information about you. Each source and its licence is credited in the app under About → Sources.

If this policy changes, the date at the top changes with it. A change affecting what leaves your device would be announced in the app's release notes as well, because a policy nobody re-reads is not notice.

Questions about this policy, or about Bushu generally, can be sent to MTS Studio through the contact page at mtsstudio.dev.