# SUN Link vs Rock Finder

The clearest difference is in-app purchases: SUN Link at none against Rock Finder's 1. Rock Finder's advantage is update cadence (every 3 weeks vs every 8 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Rock Finder sells 1 in-app purchase, starting at $24.99 per year. SUN Link asks for nothing beyond the download.

SUN Link ships an update every 8 months, Rock Finder every 3 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SUN Link | Rock Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rock-finder/id6744333994/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 73 MB | 45 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saskatchewan Union of Nurses](https://appshunter.io/developer/1712018724) | [CARTER RONALD PETERSON](https://appshunter.io/developer/1807128604) |

## What reviewers say

### SUN Link

[App page](https://appshunter.io/ios/app/sun-link/id6469461315)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rock Finder

[App page](https://appshunter.io/ios/app/rock-finder/id6744333994)

This app helps farmers and landowners mark, manage, and track rocks on their property using an interactive map. Easily drop pins, edit locations, mark rocks as removed, and organize tasks by field. Collaborate with others by sharing your progress.

**Highlights:** Mark rock locations on a map, Edit and delete pin locations, Mark rocks as removed, Organize rocks by field, Share fields with collaborators, Interactive map interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $24.99 | per year |


## Frequently asked questions

### Is SUN Link free?

SUN Link is free to download, with no in-app purchases.

### Is Rock Finder free?

Rock Finder is free to download, with in-app purchases available.

### Do SUN Link or Rock Finder have ads?

Neither SUN Link nor Rock Finder shows ads.

### Which is updated more often, SUN Link or Rock Finder?

SUN Link ships an update every 8 months, and Rock Finder every 3 weeks. Most recently, SUN Link was updated on October 25, 2026 and Rock Finder on October 28, 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.*