# Speedown - Heart Rate Alert — Apple Watch Haptic Run Coach > Apple Watch heart rate zone trainer with haptic alerts and cadence metronome. (iPhone/iPad app by 志腾 侯.) - Source: https://appshunter.io/ios/app/speedown-heart-rate-alert/id6756431112 (this page in markdown: same URL + `.md`) - Developer: [志腾 侯](https://appshunter.io/developer/1813738078) - Category: Sports, Health & Fitness - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 15 MB - Languages: American English, French (France), German (Germany), Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2026-04-02 - Data updated: 2026-09-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/speedown-heart-rate-alert/id6756431112/reviews.md ## What is Speedown? Speedown monitors your heart rate in real time via Apple Watch. The moment you exceed your target zone, a gentle wrist tap reminds you to ease up — no glancing at your watch, no fumbling with buttons, just pure focus on every stride. WHY CONTROL YOUR HEART RATE? Running isn't about going as fast as possible. Staying in the right heart rate zone builds aerobic fitness more effectively, so you run easier and healthier. HEART RATE ZONE GUARDIAN Choose from preset zones — warm-up, fat burn, aerobic, and more — or fully customize your own. When your heart rate drifts out of range, Apple Watch vibrates instantly, keeping you in a safe and efficient training intensity. Your heart matters more than your pace. BUILT-IN CADENCE METRONOME An adjustable metronome provides rhythmic cues to help you maintain a steady cadence. A higher cadence can reduce over-striding and lower impact on your knees and Achilles tendons. YOUR DATA STAYS YOURS All workout data is saved to your personal iCloud through Apple Health. We never collect or upload any personal information. Even if you uninstall Speedown, your complete workout history remains in Apple Fitness. Speedown requires an Apple Watch to use. Questions or suggestions? Feel free to reach out via the in-app feedback. ## Key features - Real-time heart rate monitoring - Haptic alerts for heart rate zones - Customizable heart rate zones - Built-in cadence metronome - Secure Apple Health data storage - Focus on aerobic fitness ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock PRO | $9.99 | one-time | ## Frequently asked questions about Speedown ### Does Speedown have ads? No, Speedown does not contain advertisements. It is a free application that focuses on providing a clean and uninterrupted user experience for heart rate monitoring and training. ### What devices does Speedown support? Speedown is designed to work with both the Apple Watch and iPhone. An Apple Watch is required for the app's core functionality of real-time heart rate monitoring and haptic feedback. ### How does Speedown help improve running? Speedown helps improve running by monitoring your heart rate and providing haptic alerts to keep you within your target training zones, promoting better aerobic fitness. It also includes a cadence metronome to help you maintain a steady and efficient stride. ### Is my workout data safe with Speedown? Yes, your workout data is securely saved to your personal iCloud through Apple Health. The developer states they never collect or upload any personal information, and your history remains even if you uninstall the app. ### What are the heart rate zones in Speedown? Speedown offers preset heart rate zones such as warm-up, fat burn, and aerobic. You also have the option to fully customize your own zones to suit your specific training goals and intensity levels. ### How often is Speedown updated? The latest version of Speedown is 1.6, and it was last updated on August 31, 2026. This indicates a recent update, suggesting ongoing development and support for the application. ### What is the age rating for Speedown? Speedown has an age rating of 4+. This means it is considered suitable for users of all ages, with no content restrictions noted. ### Can I use Speedown without an Apple Watch? No, Speedown requires an Apple Watch to function. The app relies on the Apple Watch's sensors for real-time heart rate monitoring and its haptic feedback capabilities. ## Version history (last 5 releases) ### 1.6 — 2026-08-31 Update home screen statistics. design Fixed the date/target BPM on the workout details page ### 1.5 — 2026-08-28 Fixed an issue with purchase unlocking. ### 1.4 — 2026-08-26 - Fixed pace calculation statistics in workout details. - Removed in-app purchases. ### 1.3 — 2026-04-26 - Added segment pace chart - Route-only map mode in workout detail - Fixed false health permission alert on workout start ### 1.2 — 2026-04-07 - New Feature: Automatic Pause During Running - Fixed the timing of the rating prompt ## Related topics [heart rate alert](https://appshunter.io/ios/topics/heart-rate-alert) --- *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 2026-09-04.*