HeartCast
HeartRate Broadcast from Watch
Free · Designed for iPhone. Not verified for macOS.
HeartCast turns your Apple Watch into a heart rate broadcaster, sending real-time heart rate data to cycling computers and trainers via Bluetooth BLE
BeatCast is a pure software solution that broadcasts real-time heart rate from your Apple Watch to cycling computers via Bluetooth Low Energy (BLE) — no chest strap needed.
Key Features:
• Direct Mode: Apple Watch broadcasts BLE heart rate signal directly. Search for "heart-watch" on your bike computer to connect.
• Bridge Mode: Watch sends heart rate to iPhone, which broadcasts BLE signal (device name "heart-phone") for broader bike computer compatibility.
• Real-time Sync: Watch and iPhone stay in sync via WatchConnectivity.
• 5 Heart Rate Zones: Based on the Karvonen HRR formula, with customizable age and resting HR.
• Dynamic Island & Lock Screen: Live heart rate, zone name, and connection status at a glance.
• Privacy First: All data processed locally on device. No data uploaded to any server. Fully compliant with privacy regulations.
Perfect for:
• Monitoring heart rate on your bike computer while cycling
• Replacing a traditional chest strap with just your Apple Watch
• Tracking heart rate zones during indoor training
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added Chinese and English bilingual support, auto-adapts to system language
New Phone Bridge mode for broader cycling computer compatibility
Heart rate zone feature with Karvonen formula customization
Real-time heart rate zone display on Dynamic Island
The developer, Sichuan Palm Cloud Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sichuan Palm Cloud Technology Co., Ltd.
- Size
- 5.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 9.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 ZY Tec