Measure your vinyl turntable's speed and wow with accuracy using just your phone. Save past readings for comparison and enjoy a modern interface. Supports all common record speeds.




250+ iOS apps curated and reviewed
The best rpm meter apps on iPhone average 4.2★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.8★ (39) | Yes | No | Aug 2026 | |
| 2 | Free | 4.4★ (1.7K) | Yes | Yes | Aug 2026 | |
| 3 | Free | 4.2★ (5) | No | Yes | Aug 2026 | |
| 4 | Free | 4.6★ (84) | No | Yes | Aug 2026 | |
| 5 | Free | — | No | Yes | Aug 2026 | |
| 6 | Free | 3.3★ (11) | No | Yes | Aug 2026 | |
| 7 | Free | 5.0★ (1) | No | Yes | Aug 2026 | |
| 8 | Free | 4.3★ (83) | No | Yes | Aug 2026 |




Measure your vinyl turntable's speed and wow with accuracy using just your phone. Save past readings for comparison and enjoy a modern interface. Supports all common record speeds.






This app measures the real-time speed accuracy of your turntable, displaying variations like wow and flutter graphically. It helps you identify and correct speed inconsistencies for optimal audio playback. Features include a history log and a unique visualization of inaccuracies around the vinyl center.




Measure engine RPM from sound without any tools. Simply point your phone at the exhaust of various engines like motorcycles, cars, or lawn mowers to get accurate, real-time readings. The app automatically filters background noise and indicates signal quality for reliable measurements.


This app uses slow-motion video to create a strobe light effect, allowing you to measure rotational speeds. It records video with detailed information like frame rate and exposure, and offers customizable text overlays.




This tool measures the rotational speed of motors, ideal for hobbyists working with drivable model cars. It features noise removal, speed conversion, and a memo panel for recording measurements. Customizable skins add a personal touch to the user experience.


Estimate engine RPM using your iPhone's microphone without any extra hardware. Ideal for classic cars, motorcycles, and small engines, it provides real-time readings with confidence levels and measurement history.


Measure rotational speeds of objects using your phone's flashlight, laser, or magnetic sensor. Detect precise RPMs with adjustable flicker frequencies and a wide measurement range. Ideal for analyzing fan speeds, engine RPMs, and more.


Measure rotational speed using your phone's camera or a simulated strobe light. Simply mark the rotating object and adjust the settings until it appears stationary to get an accurate RPM reading. The app also functions as a torchlight.


This application functions as a smart RPM and speed meter, providing real-time data for users. It offers a digital display of vehicle performance metrics. The app is available for free with an optional premium subscription.




This app uses your device's camera to measure the speed of a fidget spinner in revolutions per minute (RPM). Follow simple setup steps with aluminum foil and your camera's red circle to get accurate readings. Compete with friends and share your high scores on social media.


This app functions as a digital GPS speedometer, offering a comprehensive trip computer to track various travel metrics. It also includes acceleration measurement and a speed limit warning system with a HUD display option.


Transform your iPhone into a powerful strobe light and tachometer. Precisely control flashing speeds from 1Hz to 130Hz to measure the RPM of rotating objects by making them appear stationary. Ideal for precise speed measurements in dark environments.


Easily measure the actual RPM of your turntable with this straightforward tachometer. It provides detailed readings including minimum, maximum, and average RPM, along with percentage discrepancy and wow and flutter measurements.


Transform your phone into a stylish and functional speedometer for your car or motorcycle. Select from various themes to personalize your speed display.


This app facilitates remote health monitoring by syncing data from provided devices directly to a secure application. It enables personalized health coaching and ensures seamless data sharing with your care provider for optimized well-being.




This industrial calculator provides CNC programmers and machinists with instant calculations for speeds, feeds, horsepower, coolant flow, tolerances, and G-code patterns. It offers 16 production-ready tools, works offline, and features a user-friendly interface designed for the shop floor. Save and share results for improved efficiency and accuracy.


This application transforms your smartphone into a digital tachometer using its flashlight. It measures the rotational speed (RPM) of objects by flashing light at them, making them appear stationary when the flash rate matches their speed. Save readings and use it for mechanics, education, or industrial checks.