# 積DROP vs ブックタワー

The clearest difference is in-app purchases: ブックタワー at none against 積DROP's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 積DROP sells 4 one-off in-app purchases. ブックタワー asks for nothing beyond the download.

積DROP ships an update every 9 days, ブックタワー every 10 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 積DROP | ブックタワー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 days |
| Size | 57 MB | 6 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ForeGroove Inc.](https://appshunter.io/developer/1837127960) | [Sota Hidaka](https://appshunter.io/developer/6783721753) |

## What reviewers say

### 積DROP

[App page](https://appshunter.io/ios/app/drop/id6781525555)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Small Coffee | $0.49 | one-time |
| A Light Meal | $2.99 | one-time |
| A Lunch | $5.99 | one-time |
| A Dinner Treat | $11.99 | one-time |


### ブックタワー

[App page](https://appshunter.io/ios/app/id6805204447)

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

**In-app purchases:** none


## Frequently asked questions

### Is 積DROP free?

積DROP is free to download, with in-app purchases available.

### Is ブックタワー free?

ブックタワー is free to download, with no in-app purchases.

### Do 積DROP or ブックタワー have ads?

Neither 積DROP nor ブックタワー shows ads.

### Which is updated more often, 積DROP or ブックタワー?

積DROP ships an update every 9 days, and ブックタワー every 10 days. Most recently, 積DROP was updated on October 31, 2026 and ブックタワー 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.*