Best Tachometer Apps

Strobe tachometer (RPM meter)

+ Laser Tachometer + Magnetic

Free

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.

SoundRPM: Engine Tachometer

Estimate RPM by sound

Free

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.

Speedometer Simple

Accurate GPS speed tracker

Free

This app uses your phone's GPS to display your current speed accurately. It supports multiple units, shows traveled distance, and offers optional city names and a compass. You can also record trip statistics like maximum speed and distance.

Strobe Light – RPM

Digital Tachometer RPM Checker

Free

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.

Speedmeter mph digital display

Digital HUD Speedometer

Free

This GPS-powered application displays your current speed in a clear digital format, suitable for vehicles, cycling, or walking. It offers offline functionality and provides additional features like trip distance measurement, altitude tracking, and real-time speed limit warnings.

Camera RPM Meter - StrobeLight

Camera Tachometer - RPM Meter

Free

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.

Engine Lab: Simulator & Sound

Build and hear virtual engines

Free

Explore engine mechanics with a touch-first simulator. Build, tune, and test custom engines, observing animations and hearing synthesized exhaust sounds. Export your creations as WAV files.

ClinoScope

Dynamic Clinometer & Gyroscope

$3.99

This tool measures tilt angles and object inclination using your device's sensors. It offers real-time display of slopes and angles in different modes, with the ability to save measurements as images.

MeasureLab: AR Ruler & Level

AR tape measure, level, ruler

Free

This app transforms your phone into a versatile toolkit, offering AR measurement, leveling, and detection features. It utilizes your device's sensors to provide accurate readings for various tasks, from measuring furniture to finding studs. An AI assistant is also integrated for building and measuring queries.