Stroboscope Engineer

Tools Contains ads

Stroboscope app for measuring rotation, vibration, oscillaton or reciprocation

Rating: 4.0; 147 ratings
Downloads: 68.8K+; on Google Play
Price: Free; No in-app purchases
Updated: Sep 20; 2025 · v11.6

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About Stroboscope Engineer

Stroboscope app for measuring rotating, vibrating, oscillating or reciprocating objects.
It is most commonly used for:
- adjusting speed of rotation - for example adjusting speed of rotation of turntable
- adjusting frequency of vibration

How to use:
1. Start app
2. Set frequency of strobe light (in Hz) using number pickers
3. Press ON/OFF button to start the strobe light

- use button [x2] to double the frequency
- use button [1/2] to halve the frequency
- use button [50 Hz] to set frequency to 50 Hz. This is for turntable speed adjustment.
- use button [60 Hz] to set frequency to 60 Hz. This is also for turntable adjustment.

What’s new

Version 11.6 · Updated September 20, 2025

Stroboscope app v11.6 - Android 15 ready v11.5 - Added optical tachometer. Use it from MENU - TACHOMETER. The app analyzes moving object and determines frequency in Hz and RPM. How to use: - point the camera to the object and press START - hold steady for 5 seconds - result is shown in Hz and RPM v10.8 - add up to 5 buttons for fast setting of favorite frequencies or RPM - alternative strobe method in Settings - Use alternative strobe method

User reviews

Zipra

Impressively accurate strobe light compared to other apps. Perfect to measure electric motor rpm. The only app I've found that can actually measure rpm.

Derrek Leiter

I am impressed that it can turn the phones led on and off fast enough to measure around 3krpm. Nice!

App details

Stroboscope Engineer is a free Tools app for Android with 50,000+ installs on Google Play and a 4.0/5 average rating from 147 ratings. It was released on October 23, 2021 and last updated on September 20, 2025. It requires Android 7.0 or later. The app contains ads.

Category: Tools
Rating: 4.0 / 5 (147)
Installs: 68,859
In-app purchases: No
Ads: Contains ads
Version: 11.6
Requires Android: 7.0
Content rating: Everyone
Released: October 23, 2021
Last updated: September 20, 2025

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