# Structree vs Notes Den

The clearest difference is in-app purchases: Notes Den at none against Structree's 2. Notes Den also leads on ads (none vs shown). Structree's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price and update cadence there is nothing between them.

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

Structree ships an update every 5 days, Notes Den every 9 days. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Structree | Notes Den |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 9 days |
| Size | 28 MB | 44 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuichi Sato](https://appshunter.io/developer/1894470170) | [Den Digital LLC](https://appshunter.io/developer/1882372039) |

## What reviewers say

### 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 |


### Notes Den

[App page](https://appshunter.io/ios/app/notes-den/id6778819317)

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

**In-app purchases:** none


## Frequently asked questions

### Is Structree free?

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

### Is Notes Den free?

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

### Do Structree or Notes Den have ads?

Structree shows ads; Notes Den does not.

### Which is updated more often, Structree or Notes Den?

Structree ships an update every 5 days, and Notes Den every 9 days. Most recently, Structree was updated on October 8, 2026 and Notes Den on October 15, 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.*