Isochrony: Haptic Metronome

Silent Tap Tempo & BPM Counter

$0.99 · Designed for iPhone. Not verified for macOS.

Feel every beat on iPhone and Apple Watch. Isochrony delivers precise haptics, 12 time signatures, tap tempo, BPM detection, favorites, and playlists. Isochrony is a precision haptic metronome for musicians who want to feel the beat, not fight to hear it. Practice, rehearse, or perform with clear tactile tempo cues on iPhone and Apple Watch. FEEL THE RHYTHM Audio clicks can disappear under an instrument, a rehearsal, or a live mix. Isochrony delivers crisp haptic pulses on every beat so you can stay in time without headphones or another sound competing for your attention. APPLE WATCH METRONOME Use Isochrony directly from your wrist: - Standalone haptic playback—no iPhone required - 9 haptic profiles, from feather-light to heavy - Digital Crown BPM control - Tap tempo and on-device BPM detection - 12 time signatures with accented downbeats - Favorites and playlists for practice or performance - Newton's Cradle and Metronome Ticker visualizers - Two-way settings sync with iPhone PRECISE TEMPO Isochrony's drift-compensating timing engine continuously compares expected and actual tick times, then corrects the next interval in real time. TAP TEMPO & BPM DETECTION Tap along to set a tempo instantly, or let Apple Watch listen briefly and estimate the BPM of nearby audio. Microphone input is processed on-device and is never recorded or stored. BUILT FOR MUSICIANS - Adjustable range from 20 to 240 BPM - 12 time signatures: 2/4, 3/4, 4/4, 5/4, 6/4, 7/4, 3/8, 5/8, 6/8, 7/8, 9/8, and 12/8 - Stronger haptic accents on downbeats - Optional audio click and smooth visual beat cues - Works completely offline - No account, ads, analytics, or tracking PRIVATE BY DESIGN Isochrony collects no data. Settings and saved favorites stay on your devices, while iPhone and Apple Watch communicate directly through Watch Connectivity. Download Isochrony and keep precise time by feel.

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Cadence is now isochrony. Version 1.1 introduces a complete visual rebrand across iPhone and Apple Watch, including a new name, icon, wordmark, splash screen, and refreshed interface. The metronome functionality you already know remains in place, now with a more cohesive look and clearer controls.

Version 1.1

The developer, Phoenix Strategies 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 Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Phoenix Strategies LLC
    Size
    • 30.3 MB
    Category
    • Music
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 26.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Phoenix Strategies LLC
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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