# KnowTree vs Structree

The clearest difference is iOS requirement: Structree at 13.0 against KnowTree's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. KnowTree sells 1 one-off in-app purchase and Structree sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KnowTree ships an update every 9 days, Structree every 5 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | KnowTree | Structree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/knowtree/id6757321205/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 28 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ukon Ryohei](https://appshunter.io/developer/1834526187) | [Yuichi Sato](https://appshunter.io/developer/1894470170) |

## What reviewers say

### KnowTree

[App page](https://appshunter.io/ios/app/knowtree/id6757321205)

Organize your thoughts and information hierarchically with parent-child relationships. Supports Markdown, images, and code blocks for rich note-taking. Offers flexible workflows and powerful search capabilities.

**Highlights:** Hierarchical note organization, Markdown support, Flexible workflow (top-down/bottom-up), Rich content (images, links, code), Search across all nodes, Backup and restore functionality, Multiple tree management (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowTree Premium | $4.99 | one-time |


### 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 KnowTree free?

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

### Is Structree free?

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

### Do KnowTree or Structree have ads?

Both KnowTree and Structree show ads.

### Which is updated more often, KnowTree or Structree?

KnowTree ships an update every 9 days, and Structree every 5 days. Most recently, KnowTree was updated on October 31, 2026 and Structree on November 5, 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.*