SportPlus Bluetooth 4.0 Chest Strap Heart Rate Monitor for iOS (From 7.1), Android (from 4.3) and Windows Phone, Optional with ANT+ And 5.3 Khz : Amazon.co.uk: Sports & Outdoors
How to track your heart rate with only your smartphone - CNET
How to monitor your heart rate using your smartphone | NextPit
Connecting Your Heart Rate Monitor To The Peloton Android® App – Peloton Support
WhatsHeart - Heart Rate Monitoring
Heart Rate Monitor by Luckystars Studio - (Android Apps) — AppAgg
BLUETOOTH Heart Rate Monitor for ANDROID SONY, LG, HTC, Sports Tracker, HRM 4260362350014 | eBay