Belty - Belt Tuner
Belty - Belt Tuner Summary
Belty - Belt Tuner is a free iOS app in Tools by Coby Lai. Released in Jul 2026 (recently released ago). It has 4.00 ratings with a 5.00★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 135 monthly active users . Store last updated Aug 2, 2026
Recent activity: 1.00 new ratings this week View trends →
Belty - Belt Tuner SDKs Summary
App not yet scanned for SDKs.
5★
Ratings: 4.00
Screenshots
App Description
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.