Comparison

Image Ruler vs Radius On Map

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

Head to head
About

Image Ruler

This app allows you to measure objects directly on photos. Simply take a picture, mark a known object for reference, and then draw measurements on other items within the same image. It supports both metric and imperial units and offers intuitive editing tools.

Highlights
  • Measure objects on photos
  • Use a known object as a reference
  • Supports metric and imperial units
  • Intuitive editing interface
  • Organize photos easily
  • Zoom for precision
Features
Read full description

Measure anything in any photo. Take a photo or import one from your library, place a reference object you already know the size of, and instantly calculate real-world measurements — lengths, angles, and areas — directly on the image. How it works Set a reference line on a known object in your photo. From there, every measurement you draw is automatically calculated in real scale. What you can measure Ruler — measure distances and lengths Arrow — annotate with directional measurements Angle — measure the angle between any two lines Area — tap points to outline a surface and calculate its area Built for precision Works entirely offline — no internet required Metric and imperial units Pinch to zoom for precise point placement Undo and redo any change Hide or show your reference line at any time Tips for accurate results For best accuracy, make sure your reference object and the object you're measuring are in the same plane, and that the camera was parallel to both when the photo was taken. Perspective distortion affects results. Measurements are estimates based on the reference you provide.

About

Radius On Map

Easily visualize distances with a clear radius around any map pin. Set multiple circles to compare, search locations, and explore what's within a specific range. Offers standard and satellite map views with automatic pin saving for quick access.

Highlights
  • Set up to three radius circles per pin
  • Location search and exploration
  • Standard and satellite map views
  • Automatic pin saving
  • Distance comparison
Features
Read full description

Quickly visualize a clear radius around any pin you place on the map! Features: - You can set up to three radius circles for a single pin, making it easy to compare multiple distances at the same time. - Includes location search and exploration tools, so you can instantly check what’s within a certain distance from you or any other location. - Offers both standard map views and satellite imagery for a more interactive and visually appealing experience. - Pins are saved automatically, allowing you to revisit them whenever you need. Use Cases: - When house hunting, check the distance from potential homes to schools, grocery stores, train stations, and more by placing pins and seeing the radius. - For dating apps, visualize where someone might be based on the distance shown. - Great for gamers (e.g., Airline Manager) to get a quick visual estimate of flight ranges from a hub airport. - Check compliance zones: Visualize important boundaries like delivery areas or the 150 air-mile radius for driver logs. - Plan trips by identifying tourist attractions or landmarks within a specific radius around your destination. - Use it for education, like geography or social studies projects, to explore what’s within a given range of a location. - Plan walking or jogging routes by setting a radius from your starting point. - Choose event locations easily by pinpointing areas that are central and convenient for all attendees. - During emergencies, map out evacuation zones to understand which residents fall within the range of nearby shelters. This app is perfect for simplifying exploration, planning, and decision-making!

Screenshots

Image Ruler4 screens
Radius On Map4 screens

Verdict

The call

The clearest difference is rating: Radius On Map at 4.5 against Image Ruler's 1.6. Radius On Map also leads on in-app purchases (none vs 7) and review sentiment (50% vs 18%). Image Ruler's advantage is iOS requirement (15.1 vs 17.6). On price, ratings volume, update cadence and ads 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. Image Ruler sells 5 one-off in-app purchases. Radius On Map asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Radius On Map holds the better App Store score, 4.5 against 1.6. Both are backed by a comparable volume of ratings — 45 and 81 respectively. Written reviews point the same way: 18% of Image Ruler's written reviews are positive against 50% of Radius On Map's.

UpkeepUpdate frequency

Image Ruler ships an update every 3 weeks, Radius On Map fortnightly. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Image Ruler versus Radius On Map: the parameters behind the verdict, then further details
ParameterImage RulerRadius On Map
PriceFreeFree
Rating1.6 (45 ratings)4.5 (81 ratings) — better
Positive reviews17.6% of reviews50.0% of reviews — better
Number of ratings4581 — better
Update frequencyEvery 3 weeksFortnightly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size47 MB4 MB
Age rating4+4+
DeveloperMartin Schurmanntakeshi ogawa

Customer experience

Image Ruler

All ratings45 ratings
Positive15.6%
Neutral0.0%
Negative84.4%
Written reviews17 reviews
Positive17.6%
Neutral0.0%
Negative82.4%

Radius On Map

All ratings78 ratings
Positive84.6%
Neutral10.3%
Negative5.1%
Written reviews8 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

5 purchases

Image Ruler

One-time5
  • imageRulerPro$0.99
  • Small Tip2 variants$0.99
  • Medium Tip2 variants$2.99
Show 2 more
  • Big Tip$4.99
  • Big tip$4.99
None

Radius On Map

No in-app purchases

Questions

Is Image Ruler free?
Image Ruler is free to download, with in-app purchases available.
Is Radius On Map free?
Radius On Map is free to download, with no in-app purchases.
Which has better reviews, Image Ruler or Radius On Map?
Radius On Map is rated higher. Image Ruler averages 1.6 out of 5 from 45 ratings, while Radius On Map averages 4.5 from 81 ratings.
Do Image Ruler or Radius On Map have ads?
Both Image Ruler and Radius On Map show ads.
Which is updated more often, Image Ruler or Radius On Map?
Image Ruler ships an update every 3 weeks, and Radius On Map fortnightly. Most recently, Image Ruler was updated on October 24, 2026 and Radius On Map on October 24, 2026.

Other comparisons