Last updated: 27 September 2026
Who provides the app
Reaction Trainer is provided by STASH STUDIO LTD. Contact hello@stashstudio.site or +44 7864 028032 with privacy questions. See company information for the operator details.
An offline app
Reaction Trainer works offline and does not send training data to the developer. It has no accounts, sign-in, analytics, advertising, or tracking SDKs, and does not request internet access. Android backup and device transfer are described below.
What is stored on your device
Training sessions, individual attempts, reaction times, dates, daily challenge completions, and your settings are saved in the app’s private storage. They are used to show your history, statistics, challenges, and preferences. No location, contacts, photos, or advertising identifiers are accessed.
Notifications and haptics
If you turn on the daily reminder, the app requests notification permission where required and schedules a local notification. Boot and clock-change broadcasts restore that schedule. Vibration permission supports optional haptics. Nothing is sent to a server.
Android backups and device transfer
If Android backup or device transfer is turned on in your system settings, your training data can be included in that backup, which is handled by your device and account provider. The app does not operate its own cloud storage. Your provider’s terms and privacy policies apply to backup and transfer.
Retention and deletion
Data is retained locally until you delete it. Delete a session and its attempts from Results; earned challenge completions and streaks remain. Settings → Reset progress deletes all training and challenge history while keeping preferences.
Clear the app’s storage in Android settings or uninstall it to remove local preferences as well. Android backups may retain older copies and restore them after reinstalling; manage those backups through your device or account provider. See Delete app data for the available controls.
Storage and external apps
Data is kept in Android’s app-private storage. The app does not provide additional database encryption. Rate App opens Google Play or your browser. Share App sends only the public store link and promotional text to the app you choose.
Contact support opens your email app. Any message you send is handled by your email provider and the support recipient. These external services have their own privacy policies. Information you voluntarily email to the company is covered by the website and contact privacy notice.
Your choices
You can use the app without an account, keep reminders switched off, change optional sound and haptics, and remove your local records. STASH STUDIO cannot inspect, retrieve, or remotely erase your training database. For a request concerning email correspondence you have sent us, contact the privacy email above.
Changes to this notice
This page reflects the app’s source privacy notice dated 24 September 2026. The website edition is dated above. If a future app release changes its data handling, the policy should be updated to describe that release.