# Source Viewer XL vs Radius on Map

The clearest difference is price: Radius on Map at Free against Source Viewer XL's $1.99. Radius on Map also leads on update cadence (every 4 months vs every 28 months) and ratings volume (17 vs 3). Source Viewer XL's advantage is rating (4.7 vs 3.1). On review sentiment, ads and in-app purchases there is nothing between them.

Radius on Map is free to download; Source Viewer XL costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Source Viewer XL holds the better App Store score, 4.7 against 3.1. That said, the two scores are not equally well evidenced: Radius on Map has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 57% of Source Viewer XL's written reviews are positive against 59% of Radius on Map's, so the app with the better star average is not the one people write more warmly about.

Source Viewer XL ships an update every 28 months, Radius on Map every 4 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Source Viewer XL | Radius on Map |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/source-viewer-xl/id364691406/reviews)** | [3.1 (17 ratings)](https://appshunter.io/ios/app/radius-on-map-draw-circle/id991628252/reviews) |
| Number of ratings | 3 | **17** |
| Positive reviews | 57.1% of reviews | **58.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 5 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [TappiApps](https://appshunter.io/developer/549016746) |

## What reviewers say

### Source Viewer XL

[App page](https://appshunter.io/ios/app/source-viewer-xl/id364691406)

View the HTML, CSS, and JavaScript source code of any website. Highlighted syntax, extracted links, and image galleries make code analysis easy. Save images, bookmarks, and history for later.

**Highlights:** Syntax highlighting for HTML, CSS, and JavaScript, Extracts and follows embedded links, Lists and views all website images, Saves images to photo album, Bookmark and session history management, Copy/paste code functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Radius on Map

[App page](https://appshunter.io/ios/app/radius-on-map-draw-circle/id991628252)

Draw circles on a map to visualize areas of interest. Customize radius, color, and opacity, then share a link to your map viewable in any browser. Supports various coordinate and distance formats.

**Highlights:** Draw radius circles on map, Customize fill and perimeter, Add name and notes, Support for multiple coordinate formats (UTM, MGRS), Support for various distance units, Shareable map links

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Source Viewer XL free?

Source Viewer XL costs $1.99, with no in-app purchases.

### Is Radius on Map free?

Radius on Map is free to download, with no in-app purchases.

### Which has better reviews, Source Viewer XL or Radius on Map?

Source Viewer XL is rated higher. Source Viewer XL averages 4.7 out of 5 from 3 ratings, while Radius on Map averages 3.1 from 17 ratings.

### Do Source Viewer XL or Radius on Map have ads?

Neither Source Viewer XL nor Radius on Map shows ads.

### Which is updated more often, Source Viewer XL or Radius on Map?

Source Viewer XL ships an update every 28 months, and Radius on Map every 4 months. Most recently, Source Viewer XL was updated on October 23, 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.*