Never head into a workout with a dead chest strap again. HRM Battery is a focused Apple Watch app that shows the battery level of your Bluetooth heart rate strap right on your wrist. BATTERY AT A GLANCE • Animated ring with battery percentage • Color-coded levels: green (good), orange (low), red (charge soon) • Haptic confirmation when the battery level is read LIVE HEART RATE • Current BPM next to battery status • Animated heartbeat indicator • Everything in one compact view WORKS WITH YOUR STRAP • Polar H10, H9, OH1 • Wahoo TICKR, TICKR FIT, TICKR X • Garmin HRM-Pro, HRM-Pro Plus, HRM-Dual • Any Bluetooth LE heart rate monitor that exposes battery data QUICK CONNECT • Finds nearby HR straps automatically • One-tap connection • Remembers your last device for quick reconnect PRIVACY FIRST • No account required • No data collection, zero analytics • No ads, no tracking • Everything stays on your Apple Watch Built for runners, cyclists, and anyone who relies on a chest strap and wants a quick battery check before training.