# 色辞典 vs Structree

The clearest difference is in-app purchases: 色辞典 at none against Structree's 2. 色辞典 also leads on ads (none vs shown). Structree's advantage is update cadence (every 5 days vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Structree sells 2 one-off in-app purchases. 色辞典 asks for nothing beyond the download.

色辞典 ships an update every 7 months, Structree every 5 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 色辞典 | Structree |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 5 days** |
| Size | 54 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TETSUYA UTSUMI](https://appshunter.io/developer/1709225776) | [Yuichi Sato](https://appshunter.io/developer/1894470170) |

## What reviewers say

### 色辞典

[App page](https://appshunter.io/ios/app/id6470201419)

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

**In-app purchases:** none


### Structree

[App page](https://appshunter.io/ios/app/structree/id6769936533)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |
| Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is 色辞典 free?

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

### Is Structree free?

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

### Do 色辞典 or Structree have ads?

Structree shows ads; 色辞典 does not.

### Which is updated more often, 色辞典 or Structree?

色辞典 ships an update every 7 months, and Structree every 5 days. Most recently, 色辞典 was updated on November 3, 2026 and Structree on October 25, 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.*