Comparison

Camera RPM Meter vs GridGrabber

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

GridGrabber

Read full description

Coordinates rarely arrive ready to use. They come buried in messages, field notes, reports and map links — mixed with names, times, instructions and other text. GridGrabber turns that information into a simple workflow: Paste → Extract → Check → Use. Paste the text as you received it. GridGrabber finds supported coordinates and brings the results together in one place — without making you clean up or retype the message first. Usable results are ready to copy, open in a map app or export as KML or GPX. If something is incomplete or ambiguous, GridGrabber keeps that uncertainty visible so you can check it before relying on it. GridGrabber supports MGRS, UTM, latitude/longitude and other common coordinate formats, as well as supported Apple Maps, Google Maps and Waze links. Core coordinate processing works offline and on your device. There is no account, analytics or activity history. Network access is only used when a supported map link needs external resolution and you choose to continue. GridGrabber doesn’t replace your map, navigation or reporting tools. It handles the step between receiving location information and using it. Less retyping. Less format juggling. Fewer avoidable mistakes.

Screenshots

Camera RPM Meter3 screens
GridGrabber4 screens

Verdict

The call

The clearest difference is in-app purchases: GridGrabber at none against Camera RPM Meter's 1. GridGrabber also leads on ads (none vs shown). Camera RPM Meter's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Camera RPM Meter ships an update every 3 weeks, GridGrabber monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Camera RPM Meter versus GridGrabber: the parameters behind the verdict, then further details
ParameterCamera RPM MeterGridGrabber
PriceFreeFree
Rating2.1 (37 ratings) — better—
Positive reviews15.0% of reviews—
Number of ratings37 — better—
Update frequencyEvery 3 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size14 MB5 MB
Age rating4+4+
DeveloperIhsan UllahJanis Abolins

In-app purchases

1 purchases

Camera RPM Meter

One-time1
  • Un Lock All Features$3.99
None

GridGrabber

No in-app purchases

Questions

Is Camera RPM Meter free?
Camera RPM Meter is free to download, with in-app purchases available.
Is GridGrabber free?
GridGrabber is free to download, with no in-app purchases.
Do Camera RPM Meter or GridGrabber have ads?
Camera RPM Meter shows ads; GridGrabber does not.
Which is updated more often, Camera RPM Meter or GridGrabber?
Camera RPM Meter ships an update every 3 weeks, and GridGrabber monthly. Most recently, Camera RPM Meter was updated on November 3, 2026 and GridGrabber on October 31, 2026.

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