This utility app uses your phone's microphone to measure belt tension by analyzing audio frequencies. It provides instant measurements, supports multiple belt segments, and averages results for accuracy. Ideal for professionals and enthusiasts needing precise belt installations.
1.4
August 7, 2026
We rebuilt BeltTune from the ground up. Smarter Detection Engine — Completely reworked audio analysis delivers dramatically more accurate frequency readings, even in noisy garages and workshops. Harmonic filtering now tells the difference between your belt's true pitch and its overtones, so you get the right number every time. All-New Design — A cleaner, more intuitive interface makes tuning faster and easier to read at a glance. Spend less time squinting at numbers and more time getting your belt right.
MoreBeltTune uses your iPhone's microphone to listen to the vibration of the belt when struck. It then analyzes the audio frequencies to determine the belt's natural frequency, which is directly related to its tension.
BeltTune is a paid application, priced at $4.99. This one-time purchase grants you access to all its features for professional belt tension measurement.
No, BeltTune does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused on its utility features.
BeltTune is currently supported on iPhones. It leverages the iPhone's built-in microphone for its audio analysis functionality.
BeltTune utilizes sophisticated signal processing and harmonic analysis to deliver precise frequency measurements between 60-500 Hz. It also offers automatic frequency averaging for enhanced accuracy.
The latest version of BeltTune, 1.3, was last updated on September 12, 2025. This indicates ongoing development and support for the application.
BeltTune has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in mechanical applications.
Yes, BeltTune is suitable for most industrial and automotive belt applications, measuring frequencies between 60-500 Hz. Its professional accuracy makes it a versatile tool.
