# Sewing thread vs 蔵書管理

The clearest difference is ads: Sewing thread at none against 蔵書管理's shown. 蔵書管理's advantage is update cadence (every 2 months vs every 6 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Sewing thread sells 3 one-off in-app purchases and 蔵書管理 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sewing thread ships an update every 6 months, 蔵書管理 every 2 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sewing thread | 蔵書管理 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 1 MB | 35 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Kanako Komatsu](https://appshunter.io/developer/1799665417) | [naoto higashiya](https://appshunter.io/developer/1859691605) |

## What reviewers say

### Sewing thread

[App page](https://appshunter.io/ios/app/sewing-thread/id6743728133)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Cupcake | $2.99 | one-time |
| Flower | $5.99 | one-time |


### 蔵書管理

[App page](https://appshunter.io/ios/app/id6756271812)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $1.99 | one-time |


## Frequently asked questions

### Is Sewing thread free?

Sewing thread is free to download, with in-app purchases available.

### Is 蔵書管理 free?

蔵書管理 is free to download, with in-app purchases available.

### Do Sewing thread or 蔵書管理 have ads?

蔵書管理 shows ads; Sewing thread does not.

### Which is updated more often, Sewing thread or 蔵書管理?

Sewing thread ships an update every 6 months, and 蔵書管理 every 2 months. Most recently, Sewing thread was updated on October 15, 2026 and 蔵書管理 on October 6, 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.*