MMO Range Finder vs iTest.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MMO Range Finder
This app helps Marine Mammal Observers calculate distances between animals and acoustic sources during surveys. It uses trigonometric functions and allows users to input target and source bearings and distances for precise mitigation decisions.
- Calculate distance using trigonometric cosine function
- Fix compass bearing by pointing device
- Convert binocular reticules to distance
- Set up to 3 unique observation locations
- Save and export sighting data in .csv format
- Display vessel position, mitigation zone, and sightings on map
- Customise MMO parameters
Read full descriptionHide full description
Marine Mammal Observers mitigate for the potential impact of sound exposure on marine fauna during geophysical surveys, naval active-sonar exercises, UXO clearance or civil engineering projects. This app will assist the MMO making mitigation decisions by calculating the distance from the animal to the source of acoustic interference using a trigonometric cosine function. The MMO simply enters the distance and bearing to the TARGET and SOURCE from their observation position and the app calculates the rest. This app is loaded with features to make allow to keep focused on the detection (See the user manual for a detailed description): Fix compass bearing to animal and source by pointing device and pressing button. Convert binocular reticules to distance by entering the number of reticules between horizon and animal and pressing the reticule button (per formulae in Lerczack and Hobbs, 1998). Set up to 3 unique observation locations to define height above sea level (required for accurate reticule conversion). Save data to the log for each sighting and export in .csv format for your own mapping and analyses needs. Shows vessel position, mitigation zone and projected fauna sightings on the map. Map also displays latitude, longitude, course and speed. Press the radar button and the map will orientate to the vessel point of view. Sightings labels will be updated live with the distance to source and the bearing from the vessel for ease of re-sighting. Fully customise the MMO parameters. Specify anything from your binocular MILs per reticule, mitigation zone size, choose a ramform hull as your maps ship symbol and much much more! Disclaimer: MMO Range Finder App should be used as a reference tool and is only as precise as the users ability to range find. Any decision making is the responsibility of the user. If in use, the compass and GPS location should be verified often.
iTest.
Easily test your device's hardware and software without navigating multiple apps or complex settings. Offers guided and manual test modes with clear instructions and results. Ideal for assessing a device's condition before buying or selling.
- Guided semi-automatic test mode
- Manual test selection
- Easy-to-understand instructions
- Clear test results
- Shareable test reports
- Used device assessment
Read full descriptionHide full description
iTest lets you easily test a device without the need to use multiple apps or dive though various system settings. Providing you with the convenience of both a guided semi-automatic test mode and a list of tests to choose from. With easy to understand instructions and results. Share your results to a perspective buyer or test a used device before buying. iTest can help you make a more informed decision of a devices condition.
Screenshots
Verdict
The clearest difference is rating: MMO Range Finder at 5.0 against iTest.'s 4.4. MMO Range Finder also leads on review sentiment (100% vs 84%). iTest.'s advantage is monetization model (free vs paid) and ratings volume (50 vs 1). On price, update cadence, ads and in-app purchases 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
MMO Range Finder costs $0.99 and iTest. $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MMO Range Finder holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: iTest. has 50 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of MMO Range Finder's written reviews are positive against 84% of iTest.'s.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | MMO Range Finder | iTest. |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (1 ratings) — better | 4.4 (50 ratings) |
| Positive reviews | 100.0% of reviews — better | 84.1% of reviews |
| Number of ratings | 1 | 50 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | — | #197 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 | 9.0 — better |
| Further details — not scored | ||
| Size | 43 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | James Keating | Hugh Jeffreys |
Customer experience
MMO Range Finder
iTest.
Bugs and requests
MMO Range Finder
Not enough reviews yet to summarise bugs or requests.
iTest.
Reported bugs
16 issues- Light sensor test fails on multiple device models despite hardware functioning
- App crashes on startup for iOS 12 devices and older
- App crashes on iPod Touch 6th generation
- App crashes on iPad Mini 2
- Speaker test produces no sound on iPhone 16 Pro/Pro Max
Show 11 moreShow fewer
- Microphone test fails on iPhone 16 despite working hardware
- Vibration test non-functional on iPhone 16
- NFC test reports iOS version not supported on iOS 18.4.1
- Proximity sensor test gives false negatives on iPhone 11 Pro
- Camera test shows black screen despite camera permissions granted
- Compass test fails despite working hardware
- Camera test opens touchscreen test instead on some devices
- Screen burn-in test displays clock and navigation bars
- Digitizer test feels inaccurate
- UI buttons don't match actual function on iPad
- Accessibility issues with large font sizes blocking button interaction
Requested features
17 requests- Battery health and cycle count information
- LiDAR sensor test
- GPS functionality test
- Service history check
- Battery aging/degradation test
Show 12 moreShow fewer
- Support for older iOS versions (iOS 11 and below)
- Mac app version
- Apple Watch testing support
- AirPods testing capability
- CPU monitoring and RAM usage display
- Network data monitoring
- Detailed camera quality test with white background
- Fake call test for earpiece audio
- Apple Pencil testing
- Screen burn-in test in full-screen mode
- Individual microphone quality testing
- Wireless charging test
In-app purchases
MMO Range Finder
No in-app purchases
iTest.
No in-app purchases
Questions
Is MMO Range Finder free?
Is iTest. free?
Which has better reviews, MMO Range Finder or iTest.?
Do MMO Range Finder or iTest. have ads?
Which is updated more often, MMO Range Finder or iTest.?
Other comparisons















