Flutter: Heartbeat Sync App
Health & Fitness
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Feel their heartbeat across any distance. Flutter lets couples share real-time heartbeats through Apple Watch, turning every beat into a reminder they’re with you.
Flutter lets you feel a heartbeat directly on your wrist through Apple Watch.
Designed for calm, focused awareness, Flutter turns heartbeat into a live haptic experience you can physically feel in real time. During a session, Flutter reads heart rate, displays BPM clearly, and translates each beat into a precise pulse on your wrist. Different haptic styles let you choose the sensation that feels most comfortable or meaningful.
Flutter includes Solo Sync for personal heartbeat awareness and Partner Sync for sharing live heartbeats with someone you care about. Couples, friends, and family can connect through invite-based sessions and experience real-time heartbeats together, creating a simple and intimate way to stay connected across any distance.
Sessions are easy to start and stop, with a minimal interface designed to stay out of the way and keep attention on rhythm, presence, and connection.
Features
• Solo Sync for personal heartbeat awareness
• Partner Sync for sharing live heartbeats with another person
• Real-time heart rate (BPM) display
• Live haptic heartbeat feedback on Apple Watch
• Multiple haptic pulse styles
• Invite-based partner pairing
• Minimal, distraction-free interface
• Account deletion from the Profile screen
Flutter is a quiet, modern way to feel rhythm, presence, and connection.
• Privacy Policy: https://flutter.cyberian.tech/privacy.html
• Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
Bug fixes to onboarding process.
The developer, CYBERIAN TECHNOLOGIES LLC, 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 Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- Identifiers
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CYBERIAN TECHNOLOGIES LLC
- Size
- 21.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later. - Apple Watch
Requires watchOS 9.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Partner Sync Annual $119.99
- Partner Sync Quarterly $39.99
- Partner Sync (Monthly) $14.99
- Copyright
- © 2026 Cyberian Technologies LLC