# Flutter: Heartbeat Sync App > Feel your heartbeat and share it with others via Apple Watch haptics. (iPhone/iPad app by CYBERIAN TECHNOLOGIES LLC.) - Source: https://appshunter.io/ios/app/flutter-heartbeat-sync-app/id6758436973 (this page in markdown: same URL + `.md`) - Developer: [CYBERIAN TECHNOLOGIES LLC](https://appshunter.io/developer/1872937842) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 21 MB - Languages: American English - Released: 2026-04-14 - Data updated: 2026-08-24 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/flutter-heartbeat-sync-app/id6758436973/reviews.md ## What is Flutter? 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/ ## Key features - Live haptic heartbeat feedback on Apple Watch - Solo Sync for personal awareness - Partner Sync for sharing with others - Real-time BPM display - Multiple haptic pulse styles - Invite-based partner pairing ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Partner Sync (Monthly) | $14.99 | per month | | Partner Sync Quarterly | $39.99 | per 3 months | | Partner Sync Annual | $119.99 | per year | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/flutter-heartbeat-sync-app/id6758436973/reviews.md ### 5/5 — Best long distance app for couples 💗 *2026-05-08* My partner and I have been doing long distance for 4 years, and we use Flutter every single day when we're missing each other. Being able to feel his heartbeat is so intimate and has helped us feel closer in a new way that we never could've imagined. ## Frequently asked questions about Flutter ### What is Flutter? Flutter is an app that allows you to feel your heartbeat as a live haptic sensation on your Apple Watch. It also enables you to share your real-time heartbeat with a partner, friend, or family member. ### How does Flutter use Apple Watch? Flutter reads your heart rate from the Apple Watch and translates each beat into a precise pulse on your wrist using haptic feedback. This creates a tangible, rhythmic experience. ### What are the subscription plans for Flutter? Flutter offers monthly, quarterly, and annual subscription plans for its Partner Sync feature. All plans include a 7-day free trial. ### Can I use Flutter without a subscription? Yes, Flutter offers a Solo Sync feature for personal heartbeat awareness that can be used without a subscription. The Partner Sync feature requires a subscription. ### Is Flutter available on other devices besides Apple Watch? Flutter is designed to work with Apple Watch for its haptic feedback. The app itself is available on iPhone to manage sessions and connections. ### How does Flutter ensure privacy? Flutter provides a privacy policy detailing data handling practices. Users can also delete their account directly from the Profile screen within the app. ### What is the update frequency for Flutter? Flutter was last updated on May 29, 2026, with version 1.1.2. This indicates active development and ongoing improvements. ### What is the age rating for Flutter? Flutter has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 1.2 — 2026-08-18 See your heartbeat over time. • Session history: every Solo Sync and Partner Sync session is now saved. Open it from your profile to revisit any session. • BPM over time: tap a session to see your heart rate charted minute by minute, with your average, low, and high. • Partner sync graphs: partner sessions show your heartbeat and theirs on the same chart, plus how in-sync you were over the course of the session. • Trends: watch your average session heart rate move over time, for you and your partner. • Redesigned session summaries at the end of every solo and partner session. • Improved reliability between your iPhone and Apple Watch, plus bug fixes throughout. ### 1.1.2 — 2026-05-29 Bug fixes to onboarding process. ### 1.1.1 — 2026-05-25 * Account deletion: users can now delete their account, disconnect any partner, and wipe all data from Profile → Delete Account. Returns to fresh onboarding state. * Fixed a Swift type-checker compilation issue in ContentView * Improved onboarding analytics * Various stability and bug fixes ### 1.1 — 2026-05-08 Version 1.1 introduces Partner Sync. New in 1.1 • Share live heartbeats with a partner in real time • Connect through invite-based partner pairing • Use Solo Sync or Partner Sync • New subscription options for unlocking partner sessions • One subscription covers both people in a pair • Expanded iPhone and Apple Watch flows for starting, joining, and completing shared sessions ### 1.0 — 2026-04-14 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*