Summary
PowerMate is free, contains no purchases and no advertising. It collects no personal data, transmits nothing to the developer or to third parties, and contains no tracking or analytics SDKs. Everything it measures stays on your device.
What the app processes
Battery data (level, cycles, capacity, voltage, temperature, power draw) is read through the system interfaces IOKit.ps and the IORegistry. It is stored locally in UserDefaults to compute history and forecast — at most 365 daily snapshots and 90 charge sessions. This data never leaves the device.
Location data is processed only if you actively use location-based automation — that is, after you create a location rule and confirm the system prompt. The app uses region monitoring (CLLocationManager), not continuous tracking: the system merely reports entering or leaving an area you defined yourself. Coordinates are stored in the Keychain, evaluated locally only, never transmitted, and deliberately excluded from iCloud sync. Without a location rule, no location access is requested.
Settings sync (optional, can be turned off in Settings): wake modes, automation and trigger rules, and preferences are synced across devices signed in to the same Apple Account via NSUbiquitousKeyValueStore. That is your private iCloud store — the developer has no access to it. Location coordinates are excluded from sync. Apple's iCloud privacy policy applies to this data.
Diagnostics: logging goes through os.Logger and stays in the device's system log. It contains no location data and no personal information.
Sharing with third parties
None. There is no developer server, no user accounts, no ad networks, no analytics providers.
Your rights
Because no personal data is transmitted to the developer, no processing takes place on the developer's side. Data stored on your device is under your control: removing the app deletes all of it. You can revoke location access at any time in System Settings → Privacy & Security → Location Services; the app continues to work without location automation.
Children
The app is not directed at children and collects no data from them.
Changes
Material changes will be published here with an updated date.
Contact
Andreas Schütz — aschuetz90@googlemail.com