About this app
Battery Day estimates the time of your battery discharge on your iPhone, iPad and Apple Watch. Get your battery remaining time at a glance thanks to a variety of widgets, gauges and charts. Visualize your battery level history with a chart including battery level prediction and color for battery usage indication. In order for the app to record your battery usage, Battery Day must be active as a widget.
Latest release
What’s New
Two new indicators: • Time at 100% Indicates battery discharge time when fully charged. • Instant discharge time Indicates time of your battery discharge based on current (not average) usage
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 19, 2026 · 7:41 PM $2.99
Screenshots
