# 4Quadrants vs TreeNote

The clearest difference is in-app purchases: 4Quadrants at none against TreeNote's 1. TreeNote's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TreeNote sells 1 one-off in-app purchase. 4Quadrants asks for nothing beyond the download.

4Quadrants ships an update every 6 days, TreeNote weekly. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 4Quadrants | TreeNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/treenote-nested-notes/id6772667012/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Freemium |
| Size | 6 MB | 7 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [颢宸 唐](https://appshunter.io/developer/1875716414) | [Zhe Wu](https://appshunter.io/developer/1821356459) |

## What reviewers say

### 4Quadrants

[App page](https://appshunter.io/ios/app/4quadrants/id6758995394)

**Features:** macOS Compatibility

**In-app purchases:** none


### TreeNote

[App page](https://appshunter.io/ios/app/treenote-nested-notes/id6772667012)

Organize complex ideas into clear, nested outlines. Create boards for various projects and break down thoughts into detailed subnotes. Supports rich formatting, Markdown, and local data storage with optional iCloud sync.

**Highlights:** Unlimited nesting for flexible trees, Drag-and-drop reordering, Rich note details (tags, colors, due dates, images), Markdown formatting and preview, Import/export JSON, Markdown, OPML, Local data storage with iCloud sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TreeNote Pro | $2.99 | one-time |


## Frequently asked questions

### Is 4Quadrants free?

4Quadrants is free to download, with no in-app purchases.

### Is TreeNote free?

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

### Do 4Quadrants or TreeNote have ads?

Neither 4Quadrants nor TreeNote shows ads.

### Which is updated more often, 4Quadrants or TreeNote?

4Quadrants ships an update every 6 days, and TreeNote weekly. Most recently, 4Quadrants was updated on October 4, 2026 and TreeNote 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.*