# Character Memo vs StackBooks

The clearest difference is ads: StackBooks at none against Character Memo's shown. StackBooks also leads on update cadence (every 2 days vs every 4 days) and iOS requirement (16.4 vs 18.2). On price, 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.

Character Memo ships an update every 4 days, StackBooks every 2 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Character Memo | StackBooks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 10 MB | 119 MB |
| Requires iOS | 18.2 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Takatoshi Suzuki](https://appshunter.io/developer/1807015043) | [Kenta Nobutani](https://appshunter.io/developer/1840736944) |

## What reviewers say

### Character Memo

[App page](https://appshunter.io/ios/app/character-memo/id6744309745)

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

**In-app purchases:** none


### StackBooks

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Character Memo free?

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

### Is StackBooks free?

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

### Do Character Memo or StackBooks have ads?

Character Memo shows ads; StackBooks does not.

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

Character Memo ships an update every 4 days, and StackBooks every 2 days. Most recently, Character Memo was updated on October 6, 2026 and StackBooks on October 8, 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.*