PulseGuard

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About this app

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.

What’s new

PulseGuard is a focused heart-rate monitor for Bluetooth chest straps, armbands and watches. Live BPM HUD that color-shifts by zone, picture-in-picture overlay over other apps, threshold alerts with 10 tones, workout sessions with HR chart and calories, curated workout music by phase, and optional Health Connect sync. Privacy-first: no servers, no analytics, no tracking. 14-day Pro trial on first launch.