# Strobe tachometer (RPM meter) vs Luxometer

The clearest difference is in-app purchases: Luxometer at none against Strobe tachometer (RPM meter)'s 2. Luxometer also leads on update cadence (daily vs every 4 months) and iOS requirement (13.0 vs 15.6). Strobe tachometer (RPM meter)'s advantage is rating (4.3 vs 4.0) and ratings volume (83 vs 8). 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. Luxometer asks for nothing beyond the download.

Strobe tachometer (RPM meter) holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Strobe tachometer (RPM meter) has 83 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 69% of Strobe tachometer (RPM meter)'s written reviews are positive against 60% of Luxometer's.

Strobe tachometer (RPM meter) ships an update every 4 months, Luxometer daily. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Strobe tachometer (RPM meter) | Luxometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (83 ratings)](https://appshunter.io/ios/app/strobe-tachometer-rpm-meter/id831460940/reviews)** | [4.0 (8 ratings)](https://appshunter.io/ios/app/luxometer/id1528110029/reviews) |
| Number of ratings | **83** | 8 |
| Positive reviews | **69.0% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 0 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [Arias Software LLC](https://appshunter.io/developer/1458265015) |

## 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 |


### Luxometer

[App page](https://appshunter.io/ios/app/luxometer/id1528110029)

Measure ambient light intensity in Lumens and color temperature in Kelvin using your phone's built-in sensors. Point your device at a light source and see real-time readings, enhanced with augmented reality visualizations.

**Highlights:** Ambient light intensity measurement (Lumens), Ambient color temperature measurement (Kelvin), Real-time data readouts, Augmented reality visualizations, Uses device's built-in hardware

**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 Luxometer free?

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

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

Strobe tachometer (RPM meter) is rated higher. Strobe tachometer (RPM meter) averages 4.3 out of 5 from 83 ratings, while Luxometer averages 4.0 from 8 ratings.

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

Neither Strobe tachometer (RPM meter) nor Luxometer shows ads.

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

Strobe tachometer (RPM meter) ships an update every 4 months, and Luxometer daily. Most recently, Strobe tachometer (RPM meter) was updated on October 21, 2026 and Luxometer on October 3, 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.*