# ぐるどく vs StackBooks

The clearest difference is in-app purchases: StackBooks at none against ぐるどく's 1. StackBooks also leads on update cadence (every 2 days vs every 2 weeks). ぐるどく's advantage is iOS requirement (14.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. ぐるどく sells 1 one-off in-app purchase. StackBooks asks for nothing beyond the download.

ぐるどく ships an update every 2 weeks, StackBooks every 2 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ぐるどく | StackBooks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 66 MB | 119 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MAKASETE, Inc](https://appshunter.io/developer/1674779355) | [Kenta Nobutani](https://appshunter.io/developer/1840736944) |

## What reviewers say

### ぐるどく

[App page](https://appshunter.io/ios/app/epub/id6465693672)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| コメントの閲覧・投稿機能の利用 | $5.99 | one-time |


### 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 ぐるどく free?

ぐるどく is free to download, with in-app purchases available.

### Is StackBooks free?

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

### Do ぐるどく or StackBooks have ads?

Neither ぐるどく nor StackBooks shows ads.

### Which is updated more often, ぐるどく or StackBooks?

ぐるどく ships an update every 2 weeks, and StackBooks every 2 days. Most recently, ぐるどく was updated on October 9, 2026 and StackBooks on October 8, 2026.

---

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