ionmetro
Professional Metronome
USD 5.99 · Designed for iPad. Not verified for macOS.
The metronome that never drifts. Sample-accurate timing, tap tempo, time signatures, subdivision, and four sound presets. Practice the way you deserve.
ionmetro is a precision metronome built for musicians who can't afford to be off the beat.
Most metronome apps use a software timer to schedule clicks. Timers get pushed around by UI animations, scrolling, and background activity — and the beat drifts. ionmetro uses a look-ahead audio scheduler: every click is placed at a sample-accurate position in the audio buffer, 100 ms ahead of playback. The result is a rock-solid beat you can actually practice to.
**Sample-accurate timing**
Clicks are scheduled at the audio buffer level, not the UI thread. The tempo never drifts, even with your screen locked or while using another app.
**Tap tempo**
Tap in time with a recording or a musician. ionmetro locks in from your most recent tap interval — no averaging lag, just instant feel.
**Time signatures**
2/4, 3/4, 4/4, and 6/8. The downbeat is always accented so you can feel the start of every bar.
**Subdivision**
Quarter notes, eighth notes, or triplets. Subdivision clicks are softer than the main beat so the pulse stays clear.
**Four sound presets**
Classic, Wood, Digital, and Soft — from bright and snappy to warm and muted.
**Plays in the background**
ionmetro keeps beating when you lock your screen or switch apps. Pair it with a sheet music reader, a tuner, or a recording app without losing the click.
**No friction**
No subscriptions. No ads. No accounts. Open it, set your tempo, press Start.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Seth Adam Mundall, 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
- Provider
- Seth Adam Mundall
- Size
- 781.3 KB
- Category
- Music
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 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.
- iPhone
- Languages
English and 9 more
- English, Arabic, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © Seth Adam Mundall
