This app analyzes the frequency of a plucked timing belt to help you tune it accurately. It provides real-time feedback, historical data, and includes calculators for tension and belt length.






68+ iOS apps curated and reviewed
Every iPhone needs a few good belt tension apps. We benchmark 68+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (3) | No | No | Sep 2026 | |
| 2 | Free | 3.4★ (10) | No | No | May 2026 | |
| 3 | Free | 2.7★ (21) | No | No | Jul 2026 | |
| 4 | Free | — | No | No | May 2026 | |
| 5 | Free | 4.6★ (161K) | No | Yes | Sep 2026 | |
| 6 | Free | — | No | No | May 2026 | |
| 7 | Free | 5.0★ (1) | No | No | Jul 2026 | |
| 8 | $4.99 | 3.5★ (2) | No | No | Aug 2026 |






This app analyzes the frequency of a plucked timing belt to help you tune it accurately. It provides real-time feedback, historical data, and includes calculators for tension and belt length.






This application provides a comprehensive diagnostic tool for belt drive systems. It measures key parameters like pulley speeds, belt frequency, tension, and system geometry to ensure optimal performance, energy efficiency, and extended service life.




This app uses your phone's microphone to measure the sonic vibration frequency of a belt drive. It helps you determine if your bicycle belt tension needs adjustment by comparing the frequency to a provided chart. It also offers a calculator for bicycle belt drive parameters like speed ratio and center distance.




This app transforms your device into a professional sound level meter, precisely measuring ambient noise pressure. It offers advanced features like frequency analysis, historical data management, and dosimeter functions, making it useful for various applications and entertainment.




This app assists teams in managing MRO and energy costs. It provides tools for installing belts, evaluating drives, and upgrading to more energy-efficient solutions. Users can also track, schedule, and receive educational resources.


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.


Calculate the necessary length for drive system belts with this utility. Supports both open and cross belt arrangements, requiring only pulley diameters and center length for accurate results.


Scan drive belt barcodes to instantly access product information and data. Find items in the online catalog, order directly, and track your orders. Includes tools for calculating belt tension and vibration frequency.




This app provides engineers and maintenance specialists with access to industrial drive design tools and product data on their mobile devices. It offers modules for designing belt drives, managing facility maintenance, and measuring belt tension, speed, noise, and distance.




This app helps field engineers and technical sales professionals evaluate existing belt drive designs. It offers over 100 alternative solutions and allows for easy emailing of drawings and instructions in PDF format, even in remote locations.











