Last updated: 24 August 2026
Sunsill stores focus sessions, tasks, rewards, your sill arrangement, settings and a random installation identifier in the app's private storage. Sunsill does not transmit that data. Use Settings → Your data → Start over, or uninstall the app, to remove it. Export and Import let you move a local backup yourself.
If you buy a subscription, lifetime upgrade or named cosmetic, Google Play handles payment. Sunsill uses Firebase Anonymous Authentication and a Google-hosted function to validate the purchase with the Google Play Developer API. Purchase verification processes an anonymous Firebase identifier, purchase history and transaction status. Firestore stores hashes of the purchase token and order ID plus product, purchase time and lifecycle status; the raw token and order ID are not logged or stored. Sunsill and Binary Data Technology never receive your card number, billing address, Google account name or Google account email.
Session and reminder notifications are scheduled locally. Sunsill requests notification and vibration permission, but not contacts, precise location, camera, microphone or media-library access.
Sunsill is not directed at children. It has no ads, chat, social profile, purchasable currency, loot boxes or randomised paid items. Every money purchase identifies the exact product before checkout.
Android's app sandbox and device encryption protect local data. Purchase-validation traffic uses encrypted connections to Firebase and Google Play. Google retains transaction data under its policies and legal obligations. Contact the publisher to request deletion of the Google-hosted verification record.
Published by Binary Data Technology. Delete Sunsill data or email privacy questions to binarydatatechnology151@gmail.com.