PulseGuard

Train smarter with PulseGuard — a focused heart-rate monitor that pairs with your Bluetooth sensor and stays out of your way. ▸ LIVE HEART RATE Pair any Bluetooth Heart Rate Profile (0x180D) sensor — Polar H10/H9, Wahoo Tickr, Garmin HRM-Dual, COROS, Suunto, and most chest straps, armbands and watches that broadcast standard BLE heart rate. Live BPM in a clean, full-screen HUD that color-shifts as you move between zones. ▸ PICTURE-IN-PICTURE OVERLAY Float a compact BPM card on top of any other app. Run on the treadmill while watching YouTube. Cycle indoors with your favorite training video. The PiP card stays visible, color-coded to your current zone, and audible alerts cut through any media you're playing. ▸ THRESHOLD ALERTS Set a maximum heart rate and PulseGuard sounds + vibrates the moment you cross it. Pick from 10 alert tones — classic beep, triple pulse, rising chime, siren, and more. Cooldown configurable so a steady-state ride doesn't spam you. ▸ HEART-RATE ZONES Five-zone model (Recovery, Aerobic, Threshold, Maximum) with three calculation methods: • Tanaka (208 − 0.7 × age) — modern default • Fox (220 − age) — classic • Karvonen — heart-rate reserve, requires resting HR • Manual HRmax for treadmill-tested athletes ▸ WORKOUT SESSIONS Every connected window automatically becomes a session. Browse history with start time, duration, average/min/max BPM, full BPM chart, and an estimated calorie burn (Keytel et al. 2005 formula). Sessions optionally mirror to Health Connect so other fitness apps can pull them. ▸ WORKOUT MUSIC Curated audio loops by workout phase — warm-up, steady cardio, tempo run, interval push, max effort, strength grind, cooldown walk, recovery & stretch. Pick a category from Settings → Workout Music and the HUD's Now Playing row lets you switch tracks inline. Mixes with YouTube and other audio without interrupting playback. ▸ MULTIPLE DEVICES Pair multiple sensors and switch between them with a tap. Auto-connect picks up the first paired device that's broadcasting at launch. ▸ PRIVACY FIRST PulseGuard has no servers. No analytics. No tracking. No advertising. All your data stays on your device. Auto-Backup is disabled so health data does not sync to Google Drive. Health Connect mirroring is opt-in per-toggle. ▸ 10 LANGUAGES Full localization: English, Русский, Deutsch, Français, Español, Italiano, Português (Brasil), 日本語, 한국어, 简体中文. PulseGuard Pro (one-time unlock, no subscription) enables Picture-in-Picture overlay, threshold alerts, workout sessions, and workout music. A 14-day free trial starts on first launch — no card required, full functionality. REQUIREMENTS • Android 8.0 or newer • Bluetooth-capable device • A Bluetooth Heart Rate Profile (0x180D) sensor NOT A MEDICAL DEVICE PulseGuard is a fitness app. It is not designed to diagnose, treat, cure, or prevent any disease. Heart-rate accuracy depends on your sensor.