Camera RPM Meter vs ARRRM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Camera RPM Meter
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.
- 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
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How it works: With Camera: First, mark the edge of the machine whose rotational speed you want to find. Please make sure that the machine is properly visible in the camera preview. Now, go to the app, open camera RPM and adjust the RPM using the plus, minus buttons or seek bar on the screen. Now adjust the RPM unless the rotating machine becomes stationary in the camera preview. Read the value from the input field; this is the RPM of your rotating machine. With Strobe Light First, mark the edge of the machine whose rotational speed you want to find. Ensure that the machine is placed in suitable darkness. Now, go to the app, turn it on and set the approximate value of RPM using the Plus, minus button or seek bar in the strobe light module of the app. Focus your flashlight on the rotating machine, then adjust the RPM using the bar up or down until the mark on the machine appears stationary. Read the value from the input field; this is the RPM of your rotating machine. Features of the RPM Meter - Strobe Lights: • Simple and smooth interface • Check RPM using mobile camera • Check RPM using Strobe light • Easy-to-use app with a user-friendly design • Compact app size • No internet connectivity needed • On/off button functions like a torch • RPM Meter – Strobe Light can be used as a torchlight • Strobe light mode works like a stroboscope. • The strobe light speed can be set in different ways, such as using seek bar or plus/minus buttons in the app.
ARRRM
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Work tracker for custom car makers and mechanics
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Camera RPM Meter | ARRRM |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (37 ratings) — better | — |
| Positive reviews | 15.0% of reviews | — |
| Number of ratings | 37 — better | — |
| Update frequency | Every 3 weeks — better | Every 13 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.1 |
| Further details — not scored | ||
| Size | 14 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Ihsan Ullah | Ladislav Pospech |
In-app purchases
Camera RPM Meter
- Un Lock All Features$3.99
ARRRM
No in-app purchases
Questions
Is Camera RPM Meter free?
Is ARRRM free?
Do Camera RPM Meter or ARRRM have ads?
Which is updated more often, Camera RPM Meter or ARRRM?
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