Best Belt Tension Apps

78+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated October 2026

Every iPhone needs a few good belt tension apps. We benchmark 78+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Belt Tension Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Belty - Belt TunerBelty - Belt TunerFree5.0★ (5)NoNoOct 2026
2Carbon Drive Belt Tension ToolCarbon Drive Belt Tension ToolFree2.7★ (21)NoNoOct 2026
3Smart Belt DriveSmart Belt DriveFree2.8★ (13)NoNoOct 2026
4Tension Meter CompanionTension Meter CompanionFree—NoNoMay 2026
5Belt Tension CalculatorBelt Tension CalculatorFree—NoNoMay 2026
6Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (164K)NoYesNov 2026
7Make Power SmartMake Power SmartFree5.0★ (1)NoNoOct 2026
8BeltTuneBeltTune$4.993.5★ (2)NoNoSep 2026

Top Picks for Belt Tension

Belty - Belt Tuner#1

Belty - Belt Tuner by Coby Lai

Sonic belt tensioner
Editor's Choice
🔧 Utilities
5.0(5 ratings)
Free
Belty - Belt Tuner screenshot 1
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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.

Carbon Drive Belt Tension Tool#2

Carbon Drive Belt Tension Tool by Gates Corporation

Gates Carbon Drive
Strong Contender
⚽ Sports
2.7(21 ratings)
Free
Carbon Drive Belt Tension Tool screenshot 1
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Carbon Drive Belt Tension Tool screenshot 4

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.

2.8(13 ratings)
Free
Smart Belt Drive screenshot 1
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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.

More Belt Tension apps to explore

FAQ about Belt Tension

What are the best belt tension apps for iPhone?
Belty - Belt Tuner tops our belt tension apps ranking as of October 2026, with a 5.0-star average from 5 App Store ratings, and it's free to download.
Yes — 17 of the top belt tension apps we rank are free to download, including Belty - Belt Tuner and Carbon Drive Belt Tension Tool.
Belty - Belt Tuner has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 78+ belt tension apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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