★★★★★
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Themes, improved settings, bug fixes
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.