Updated 12 November 2026. Operator: Nagi Lab. Contact: nagilab.apps@outlook.jp.
Habit names, goals, reminders, notes, history, language and stamps stay in app storage on your device. There is no account, cloud sync or app analytics service. Android automatic backup is disabled. The home-screen widget reads the same local records. Exporting a backup or sharing your block count opens the destination you choose; only do so with trusted recipients. Exported backups include habit names and notes.
Optional advertising: Google Mobile Ads and UMP are included, with AppLovin, Unity Ads and Liftoff mediation adapters. Ads are requested only after you choose a video, confirm age 16+ and the consent flow allows advertising. The SDKs may collect/share IP-derived approximate location, product interactions, diagnostics, and device/account identifiers for advertising, analytics and fraud prevention. They do not receive your habit names or notes from our app. Internet is needed for videos. Use Settings → Ad privacy settings for available privacy choices; forms depend on region and provider setup. Under-16 users can use the tracker without videos.
This build uses the production advertising IDs assigned to Tsumiki. Mediation groups are not configured, so partner ad delivery is unverified. Google Play processes optional one-time purchases and purchase history, and the app verifies signed purchase records locally to restore block styles. No card details are received by Nagi Lab. Purchase IDs and verification key are currently blank; purchases are unavailable in this build.
Delete local records in Android Settings → Apps → Tsumiki → Storage → Clear data, or uninstall. Delete exported files separately. Advertising and Google Play records follow each provider’s retention and deletion policies; we cannot promise to delete all provider records through this app. Email feedback sends the address and content you choose via your mail app. No contacts, camera, microphone, precise location or photo library access is required. Notifications need permission. Intended for ages 13+. No medical diagnosis or treatment is offered. Provider policies and a support address are below.