# AA Big Book e vs CompostSense

The clearest difference is in-app purchases: CompostSense at none against AA Big Book e's 3. CompostSense also leads on iOS requirement (12.0 vs 15.0). AA Big Book e's advantage is device support. On price there is nothing between them.

Both are free to download. AA Big Book e sells 3 in-app purchases, starting at $4.99 per month. CompostSense asks for nothing beyond the download.

## The numbers

| Metric | AA Big Book e | CompostSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (20 ratings)](https://appshunter.io/ios/app/aa-big-book-e-reader-plus-audio/id6448790511/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 68 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [Tushar Bhagat](https://appshunter.io/developer/901932809) | [Aidan Beery](https://appshunter.io/developer/1778347886) |

## What reviewers say

### AA Big Book e

[App page](https://appshunter.io/ios/app/aa-big-book-e-reader-plus-audio/id6448790511)

This app provides a digital version of the AA Big Book, allowing users to read, listen to the audio version, and take notes. It features highlighting, bookmarking, search functionality, and a sobriety calculator to support recovery.

**Highlights:** Highlight and color-code text, Take notes and reflections, Bookmark and quick access, Powerful search functionality, Full text of the Big Book, Audio playback, Sobriety calculator

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Quarterly Subscription | $9.99 | per 3 months |
| Annual Subscription | $29.99 | per year |


### CompostSense

[App page](https://appshunter.io/ios/app/compostsense/id6737875464)

**In-app purchases:** none


## Frequently asked questions

### Is AA Big Book e free?

AA Big Book e is free to download, with in-app purchases available.

### Is CompostSense free?

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

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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.*