# DriveClass vs ADI BOOK

The clearest difference is device support: ADI BOOK at 3 against DriveClass's 1. ADI BOOK also leads on iOS requirement (13.0 vs 18). 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.

DriveClass ships an update every 11 days, ADI BOOK fortnightly. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | DriveClass | ADI BOOK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Size | 21 MB | 61 MB |
| Requires iOS | 18 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [michael brown](https://appshunter.io/developer/1495536155) | [ADI BOOK LIMITED](https://appshunter.io/developer/1801016102) |

## What reviewers say

### DriveClass

[App page](https://appshunter.io/ios/app/driveclass/id1495536306)

**In-app purchases:** none


### ADI BOOK

[App page](https://appshunter.io/ios/app/adi-book-instructor/id6743073433)

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

**In-app purchases:** none


## Frequently asked questions

### Is DriveClass free?

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

### Is ADI BOOK free?

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

### Do DriveClass or ADI BOOK have ads?

Neither DriveClass nor ADI BOOK shows ads.

### Which is updated more often, DriveClass or ADI BOOK?

DriveClass ships an update every 11 days, and ADI BOOK fortnightly. Most recently, DriveClass was updated on September 19, 2026 and ADI BOOK on September 17, 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.*