# i vs AA Big Book e

The clearest difference is review sentiment: i at 67% against AA Big Book e's 0%. i also leads on in-app purchases (none vs 3) and iOS requirement (12.0 vs 15.0). AA Big Book e's advantage is rating (4.5 vs 3.7) and update cadence (weekly vs every 3 weeks). On price, ads and device support 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. i asks for nothing beyond the download.

AA Big Book e holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: AA Big Book e has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 67% of i's written reviews are positive against 0% of AA Big Book e's, so the app with the better star average is not the one people write more warmly about.

i ships an update every 3 weeks, AA Big Book e weekly. Both last shipped on September 17, 2026.

## The numbers

| Metric | i | AA Big Book e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/i-sober/id1447339897/reviews) | **[4.5 (20 ratings)](https://appshunter.io/ios/app/aa-big-book-e-reader-plus-audio/id6448790511/reviews)** |
| Number of ratings | 3 | **20** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 88 MB | 33 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SENTECH KOREA CORP](https://appshunter.io/developer/1446527193) | [Tushar Bhagat](https://appshunter.io/developer/901932809) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-sober/id1447339897)

This app connects to a Bluetooth breathalyzer to manage and share test results. It features a self-diagnosis system for sensor quality checks and allows users to verify tests with a photo. Results can be shared via SMS, SNS, and email.

**Highlights:** Bluetooth connectivity with breathalyzer, Data management and sharing, Self Diagnosis System (SDS) for sensor quality, Camera mode for test verification, Share results via SMS, SNS, and email, Location information sharing

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is i free?

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

### Is AA Big Book e free?

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

### Which has better reviews, i or AA Big Book e?

AA Big Book e is rated higher. i averages 3.7 out of 5 from 3 ratings, while AA Big Book e averages 4.5 from 20 ratings.

### Do i or AA Big Book e have ads?

Neither i nor AA Big Book e shows ads.

### Which is updated more often, i or AA Big Book e?

i ships an update every 3 weeks, and AA Big Book e weekly. Most recently, i was updated on September 17, 2026 and AA Big Book e on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*