Last updated: October 3, 2026
Tetrad does not collect, store or transmit your personal data to us. There is no account, no server, no analytics and no advertising.
Boards, tasks, notes, steps, tags, attached photos and focus history are stored in a database on your device. If you turn on iCloud sync (Tetrad Pro), they are also stored in your private iCloud database (Apple CloudKit), which only your Apple ID can read. We cannot access it. Otherwise they never leave your device unless you export a backup or CSV yourself.
If you link a board to a Reminders list or turn on calendar events, Tetrad reads and writes those items on your device through Apple's EventKit framework, with your permission. Nothing is sent to us.
Sorting suggestions and step-splitting run on your device (Apple Intelligence where available, otherwise built-in rules). Task text is not uploaded.
When you attach a photo or add tasks from a photo, you pick the image with the iOS photo picker. Tetrad does not request access to your whole photo library. Text recognition runs on your device.
Tetrad Pro is sold through Apple's In-App Purchase. Apple processes payment; we do not receive your payment or personal details.
CSV files, images and backups are created on your device and shared only where you choose.
Tetradは個人情報を収集・送信しません。アカウント、サーバー、分析、広告はありません。タスクなどのデータは端末内、iCloud同期（Tetrad Pro）を有効にした場合はご自身のiCloud（CloudKitのプライベートデータベース）にのみ保存されます。リマインダー・カレンダーとの連携、仕分けの提案、写真からの文字認識はすべて端末内で行われます。購入はAppleのApp内課金で処理されます。お問い合わせ：junmo588@gmail.com
Tetrad erhebt und überträgt keine personenbezogenen Daten. Es gibt kein Konto, keinen Server, keine Analyse und keine Werbung. Deine Aufgaben werden auf deinem Gerät gespeichert und – wenn du iCloud-Sync (Tetrad Pro) aktivierst – in deiner privaten iCloud-Datenbank (Apple CloudKit), die nur deine Apple-ID lesen kann. Die Verbindung mit Erinnerungen und Kalender, Sortiervorschläge und Texterkennung in Fotos laufen auf dem Gerät. Käufe werden über Apples In-App-Kauf abgewickelt. Kontakt: junmo588@gmail.com