# Solid Rock Church vs DUO LINK 4

The clearest difference is review sentiment: Solid Rock Church at 100% against DUO LINK 4's 20%. Solid Rock Church also leads on rating (4.3 vs 2.1). DUO LINK 4's advantage is ratings volume (513 vs 4) and iOS requirement (11.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Solid Rock Church holds the better App Store score, 4.3 against 2.1. That said, the two scores are not equally well evidenced: DUO LINK 4 has 513 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Solid Rock Church's written reviews are positive against 20% of DUO LINK 4's.

Solid Rock Church ships an update every 4 months, DUO LINK 4 every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Solid Rock Church | DUO LINK 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/solid-rock-church/id646167065/reviews)** | [2.1 (513 ratings)](https://appshunter.io/ios/app/duo-link-4/id1103672387/reviews) |
| Number of ratings | 4 | **513** |
| Positive reviews | **100.0% of reviews** | 19.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 43 MB | 123 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Solid Rock Worship Center](https://appshunter.io/developer/1477221924) | [PNY](https://appshunter.io/developer/1103672386) |

## What reviewers say

### Solid Rock Church

[App page](https://appshunter.io/ios/app/solid-rock-church/id646167065)

Engage with a church community, access media content, and make donations conveniently. Stay informed about church events and updates.

**Highlights:** Community engagement, Media content access, Convenient donations, Event updates, Learn about the church

**Features:** macOS Compatibility

**In-app purchases:** none


### DUO LINK 4

[App page](https://appshunter.io/ios/app/duo-link-4/id1103672387)

Manage and transfer files between your iOS device and a USB flash drive. Free up storage, back up data, and even charge your device. Supports a wide range of file formats for seamless integration.

**Highlights:** Free up iPhone/iPad space, Charge iOS devices, Back up contacts, Transfer photos and videos, Store photos directly, Manage files, Music and video playback

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient file transfer
- 💡 Useful for freeing up phone storage
- 👍 Straightforward to use

**What reviewers complain about**

- 🐛 Frequent app crashes
- 🔍 Confusing or limited UI
- 🔌 Compatibility issues with newer devices
- 💾 Data loss or corruption

**Reported bugs**

- App fails to detect connected device
- Transferred files not visible or accessible
- Inconsistent behavior when renaming folders

**Requested features**

- Add 'select all' option for photos/files
- Support for more file formats
- Improve iPad app experience
- Integrate with native Files app


## Frequently asked questions

### Is Solid Rock Church free?

Solid Rock Church is free to download, with no in-app purchases.

### Is DUO LINK 4 free?

DUO LINK 4 is free to download, with no in-app purchases.

### Which has better reviews, Solid Rock Church or DUO LINK 4?

Solid Rock Church is rated higher. Solid Rock Church averages 4.3 out of 5 from 4 ratings, while DUO LINK 4 averages 2.1 from 513 ratings.

### Do Solid Rock Church or DUO LINK 4 have ads?

Neither Solid Rock Church nor DUO LINK 4 shows ads.

### Which is updated more often, Solid Rock Church or DUO LINK 4?

Solid Rock Church ships an update every 4 months, and DUO LINK 4 every 2 months. Most recently, Solid Rock Church was updated on November 1, 2026 and DUO LINK 4 on November 2, 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.*