Belty - Belt Tuner
Sonic belt tensioner
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Pluck a timing belt, get its frequency. Tune to a target, or calculate one. All on device.
Belty — Timing Belt Tuner
Pluck a timing belt, and Belty tells you its frequency.
Measure
Real-time frequency analysis. Averages multiple plucks and reports the dominant frequency with a confidence interval, plus secondary tones for harmonic checking.
Tune
Set a target frequency and adjust the belt. A live indicator tells you tighter, looser, or on target, so you can dial in a span without stopping to re-measure.
History
Save, name, and favorite any measurement or calculation.
Also includes a tension calculator (GT2 2mm/3mm, GT3 3mm, HTD 3M, HTD 5M, MXL, XL, plus custom belts from a datasheet), giving loose, medium, and tight targets in Hz and newtons, and a belt length calculator for open-belt geometry in both directions.
Everything runs on device. No account, no data collected, no audio recorded. The mic is only used to listen to the belt.
Themes, improved settings, bug fixes
The developer, Coby Lai, 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
- Seller
- Coby Lai
- Size
- 1.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Coby Lai