250+ iOS apps curated and reviewed
If you already know RPM Dot by SparkEVO, this is the deeper bench. 250+ rpm reader apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | Yes | May 2026 |
| 2 |  | Free | 2.3★ (32) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.4★ (1.7K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.6★ (84) | No | Yes | Aug 2026 |
| 5 |  | Free | 3.3★ (11) | No | Yes | May 2026 |
| 6 |  | Free | — | Yes | Yes | Aug 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | 4.4★ (79) | No | Yes | Jul 2026 |
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.
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 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.
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.
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.
Access up-to-date news, stock information, and financial reports from RPM International Inc. This app provides investors and analysts with key company data, including management bios and total return charts, on iPhone and iPad.
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 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 allows users to read and manage ePub and PDF books from their device. It offers features like automatic thumbnail generation, reading progress tracking, customizable text size, and multiple themes for a comfortable reading experience.