# Strobe tachometer (RPM meter) vs Strobr Scope

The clearest difference is rating: Strobe tachometer (RPM meter) at 4.3 against Strobr Scope's 3.7. Strobe tachometer (RPM meter) also leads on ratings volume (83 vs 3) and update cadence (every 4 months vs every 12 months). Strobr Scope's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Strobe tachometer (RPM meter) sells 2 one-off in-app purchases. Strobr Scope asks for nothing beyond the download.

Strobe tachometer (RPM meter) holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Strobe tachometer (RPM meter) has 83 ratings behind it against 3, so its average is the more settled of the two.

Strobe tachometer (RPM meter) ships an update every 4 months, Strobr Scope every 12 months. The most recent releases landed on September 9, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Strobe tachometer (RPM meter) | Strobr Scope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (83 ratings)](https://appshunter.io/ios/app/strobe-tachometer-rpm-meter/id831460940/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/strobr-scope/id1330331187/reviews) |
| Number of ratings | **83** | 3 |
| Positive reviews | 69.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 14 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [Alexander Zhang](https://appshunter.io/developer/1418087801) |

## What reviewers say

### Strobe tachometer (RPM meter)

[App page](https://appshunter.io/ios/app/strobe-tachometer-rpm-meter/id831460940)

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.

**Highlights:** Strobe tachometer function, Laser tachometer mode, Magnetic tachometer mode, Adjustable flicker frequency, RPM and Hz display, High precision measurement

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version of the stroboscopic tachometer | $2.99 | one-time |
| Laser Tachometer and Magnetic | $2.99 | one-time |


### Strobr Scope

[App page](https://appshunter.io/ios/app/strobr-scope/id1330331187)

This utility app uses your device's camera to measure the frequencies of various cycles, including rotational speeds and electrical light frequencies. It offers a more convenient and less distracting alternative to traditional stroboscopes, capable of measuring even very slow rotations.

**Highlights:** Camera-based stroboscope, Measures rotational frequencies, Measures electrical light frequencies, Measures slow rotations, Continuously variable frame rates, Convenient and less distracting

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Strobe tachometer (RPM meter) free?

Strobe tachometer (RPM meter) is free to download, with in-app purchases available.

### Is Strobr Scope free?

Strobr Scope is free to download, with no in-app purchases.

### Which has better reviews, Strobe tachometer (RPM meter) or Strobr Scope?

Strobe tachometer (RPM meter) is rated higher. Strobe tachometer (RPM meter) averages 4.3 out of 5 from 83 ratings, while Strobr Scope averages 3.7 from 3 ratings.

### Do Strobe tachometer (RPM meter) or Strobr Scope have ads?

Neither Strobe tachometer (RPM meter) nor Strobr Scope shows ads.

### Which is updated more often, Strobe tachometer (RPM meter) or Strobr Scope?

Strobe tachometer (RPM meter) ships an update every 4 months, and Strobr Scope every 12 months. Most recently, Strobe tachometer (RPM meter) was updated on September 9, 2026 and Strobr Scope on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*