Last updated: 2026-06-09
Voltsy ("the app") is a battery-care companion for iPhone. We designed it to keep your data on your device.
Battery readings on your device. Voltsy records approximate charge level, charge/unplugged/full state, Low Power Mode, and the system thermal level over time to power Volt's reactions, your care score, streak, and history. This data is stored only on your device (and, for the widget and Live Activity, in a private app-group container on your device). We do not upload it to any server. Voltsy has no account and no backend.
Voltsy uses only Apple's public battery APIs. It cannot read Apple's official battery health percentage, cycle count, capacity, voltage, temperature in degrees, or any private hardware data. Every health/care figure shown is an on-device estimate.
The free version shows ads via Google AdMob. To do this, the Google Mobile Ads SDK may access advertising identifiers and device information to serve and measure ads. Depending on your region, you will be asked for consent (GDPR) and, on iOS, for App Tracking Transparency permission; you can decline and still use the app with non-personalized ads.
Voltsy Pro removes all ads. Pro users see no ads and no tracking/consent prompts.
Voltsy Pro is a one-time purchase processed by Apple. We do not receive your payment details; Apple handles the transaction and tells the app only whether you own Pro.
Voltsy is not directed at children under 13.
Questions: levin.schwab@gmx.de