# Stablereef vs ABS Admin

The clearest difference is in-app purchases: Stablereef at none against ABS Admin's 3. Stablereef also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ABS Admin sells 3 one-off in-app purchases. Stablereef asks for nothing beyond the download.

Stablereef ships an update every 9 days, ABS Admin every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stablereef | ABS Admin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/abs-admin-audiobookshelf/id6788065635/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | — | Free |
| Size | 32 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sloth Lab Inc.](https://appshunter.io/developer/1137456711) | [Corey FELDMAN](https://appshunter.io/developer/1836967631) |

## What reviewers say

### Stablereef

[App page](https://appshunter.io/ios/app/stablereef-reef-tank-tracker/id6786743792)

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

**In-app purchases:** none


### ABS Admin

[App page](https://appshunter.io/ios/app/abs-admin-audiobookshelf/id6788065635)

Manage your personal audiobook and ebook server, play and read content, and organize your entire library. This app offers a comprehensive suite of tools for server administration, including metadata editing, library cleanup, and user management.

**Highlights:** Manage audiobook and ebook libraries, Built-in audiobook player, EPUB, PDF, and CBZ reader, Edit metadata and fix covers, Organize series, collections, and playlists, Upload media from cloud storage, Podcast management, User and permission management

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


## Frequently asked questions

### Is Stablereef free?

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

### Is ABS Admin free?

ABS Admin is free to download, with in-app purchases available.

### Do Stablereef or ABS Admin have ads?

Neither Stablereef nor ABS Admin shows ads.

### Which is updated more often, Stablereef or ABS Admin?

Stablereef ships an update every 9 days, and ABS Admin every 5 days. Most recently, Stablereef was updated on November 5, 2026 and ABS Admin on October 31, 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.*