# Image Ruler vs Radius On Map

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.

Both are free to download. Image Ruler sells 5 one-off in-app purchases. Radius On Map asks for nothing beyond the download.

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.

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

## The numbers

| Metric | Image Ruler | Radius On Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (45 ratings)](https://appshunter.io/ios/app/image-ruler-measures/id1474481911/reviews) | **[4.5 (81 ratings)](https://appshunter.io/ios/app/radius-on-map-draw-circles/id6740818227/reviews)** |
| Number of ratings | 45 | **81** |
| Positive reviews | 17.6% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 47 MB | 4 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Martin Schurmann](https://appshunter.io/developer/1469819101) | [takeshi ogawa](https://appshunter.io/developer/1676749157) |

## What reviewers say

### Image Ruler

[App page](https://appshunter.io/ios/app/image-ruler-measures/id1474481911)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| imageRulerPro | $0.99 | one-time |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Big Tip | $4.99 | one-time |
| Big tip | $4.99 | one-time |


### Radius On Map

[App page](https://appshunter.io/ios/app/radius-on-map-draw-circles/id6740818227)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

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