# StackBooks vs Book Memo

The clearest difference is update cadence: StackBooks at every 2 days against Book Memo's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

StackBooks ships an update every 2 days, Book Memo every 9 days. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | StackBooks | Book Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Size | 119 MB | 36 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kenta Nobutani](https://appshunter.io/developer/1840736944) | [Yuki Tagami](https://appshunter.io/developer/6802937847) |

## What reviewers say

### StackBooks

[App page](https://appshunter.io/ios/app/stackbooks-book-tracker-and-tbr/id6805723809)

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

**In-app purchases:** none


### Book Memo

[App page](https://appshunter.io/ios/app/book-memo-reading-log-and-notes/id6810904258)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is StackBooks free?

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

### Is Book Memo free?

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

### Do StackBooks or Book Memo have ads?

Neither StackBooks nor Book Memo shows ads.

### Which is updated more often, StackBooks or Book Memo?

StackBooks ships an update every 2 days, and Book Memo every 9 days. Most recently, StackBooks was updated on October 8, 2026 and Book Memo on October 12, 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.*