# Camera RPM Meter vs ARRRM

The clearest difference is in-app purchases: ARRRM at none against Camera RPM Meter's 1. ARRRM also leads on ads (none vs shown). Camera RPM Meter's advantage is update cadence (every 3 weeks vs every 13 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Camera RPM Meter sells 1 one-off in-app purchase. ARRRM asks for nothing beyond the download.

Camera RPM Meter ships an update every 3 weeks, ARRRM every 13 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Camera RPM Meter | ARRRM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (37 ratings)](https://appshunter.io/ios/app/camera-rpm-meter-strobelight/id1583247436/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 15.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 13 months |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 90 MB |
| Requires iOS | **12.0** | 13.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ihsan Ullah](https://appshunter.io/developer/1488089071) | [Ladislav Pospech](https://appshunter.io/developer/1680689307) |

## What reviewers say

### Camera RPM Meter

[App page](https://appshunter.io/ios/app/camera-rpm-meter-strobelight/id1583247436)

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.

**Highlights:** Measure RPM with mobile camera, Measure RPM with strobe light simulation, Adjust RPM with seek bar or buttons, Torchlight functionality, Offline use, Compact app size

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Un Lock All Features | $3.99 | one-time |


### ARRRM

[App page](https://appshunter.io/ios/app/arrrm/id6472652836)

**In-app purchases:** none


## Frequently asked questions

### Is Camera RPM Meter free?

Camera RPM Meter is free to download, with in-app purchases available.

### Is ARRRM free?

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

### Do Camera RPM Meter or ARRRM have ads?

Camera RPM Meter shows ads; ARRRM does not.

### Which is updated more often, Camera RPM Meter or ARRRM?

Camera RPM Meter ships an update every 3 weeks, and ARRRM every 13 months. Most recently, Camera RPM Meter was updated on October 25, 2026 and ARRRM on October 25, 2026.

---

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