Strobe Light Tachometer

Name: Strobe Light Tachometer
Rating: 4.2 (276 reviews)
Author: Motionics LLC

By: Motionics LLC App

Productivity

Overview

Version:

1.1

Last updated: 2015-10-28

Ranking

#105,908 ▼ 162

Overall

Features & Capabilities

Strobe Light Tachometer turns your iPhone into a controllable strobe light using the flashlight. It lets you dial the flash rate from 1 Hz to 130 Hz (60-7800 RPM) to visually freeze or reveal motion.

Use it as a tachometer to measure RPM of rotating objects like fans. Features include a speed slider, quick x2 and ÷2 adjustments, precise fine-tuning to two decimals, manual RPM entry, light/dark themes, and dual Hz/RPM display.

User Growth & Download Statistics

App Photography Education

By:

Motionics LLC

Rating:

4.20

(276) 1 new ratings

Version:

1.1 Last updated: 2015-10-28

Version code:

841502580

Creation date:

2015-03-30

Compatible devices:

Size:

4.39MB

URLs:

Website

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-22

Compare stats and ranking:

Ranking

# 105,908 ▼ 162

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

Motionics LLC

Apple Apps Store

https://apps.apple.com/us/app/strobe-light-tachometer/id978182913

Website:

http://motionics.com

User Reviews

Users praise the app for accurate timing, ease of use, and versatility across tools and demonstrations, and note it’s free. However, brightness is often too dim, pulses are inconsistent, device compatibility and reliability vary by model, and there are occasional speed-read inaccuracies and ads, leading to mixed experiences depending on device and use case.

Pros

Accurate speed readings (RPM) and precise Hertz mapping
Easy to use and quick to operate, even one-handed
Very useful across a range of applications (lathe, drill press, fans, zoetropes) with clear metrics
Flashes are clean and not overly bright, reducing overexposure in some setups
Free app with strong value

Cons

Strobe brightness is often too dim for visibility
Pulse/brightness is inconsistent and can pause or miss beats
Compatibility and reliability issues on certain iPhone models (e.g., SE, XS) and occasional outages
Inaccurate readings at certain speeds (low speeds around 60 rpm; some high-frequency discrepancies)
Occasional ads or monetization friction in the interface