# Book Companion vs Memory Test

The clearest difference is update cadence: Book Companion at every 2 weeks against Memory Test's every 4 months. Memory Test's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Book Companion sells 3 in-app purchases, starting at $3.99 per month and Memory Test sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Book Companion ships an update every 2 weeks, Memory Test every 4 months. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Book Companion | Memory Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 52 MB | 12 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Robert Palmer](https://appshunter.io/developer/1000164792) | [Anton Zuev](https://appshunter.io/developer/521562103) |

## What reviewers say

### Book Companion

[App page](https://appshunter.io/ios/app/book-companion-scanner/id6744534847)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month | $3.99 | per month |
| One Year | $24.99 | per year |
| Lifetime Pro | $79.99 | one-time |


### Memory Test

[App page](https://appshunter.io/ios/app/memory-test-brain-training/id6756063811)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium for 1 year | $24.99 | per year |


## Frequently asked questions

### Is Book Companion free?

Book Companion is free to download, with in-app purchases available.

### Is Memory Test free?

Memory Test is free to download, with in-app purchases available.

### Do Book Companion or Memory Test have ads?

Neither Book Companion nor Memory Test shows ads.

### Which is updated more often, Book Companion or Memory Test?

Book Companion ships an update every 2 weeks, and Memory Test every 4 months. Most recently, Book Companion was updated on October 28, 2026 and Memory Test 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.*