# 4Quadrants vs MemoTree

The clearest difference is in-app purchases: 4Quadrants at none against MemoTree's 1. 4Quadrants also leads on ads (none vs shown). MemoTree's advantage is iOS requirement (15.6 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. MemoTree sells 1 in-app purchase, starting at $0.99 per month. 4Quadrants asks for nothing beyond the download.

4Quadrants ships an update every 6 days, MemoTree every 4 days. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 4Quadrants | MemoTree |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | **Every 4 days** |
| Size | 6 MB | 5 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [颢宸 唐](https://appshunter.io/developer/1875716414) | [상섭 이](https://appshunter.io/developer/1276061930) |

## What reviewers say

### 4Quadrants

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

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoTree

[App page](https://appshunter.io/ios/app/memotree-notes-organizer/id6760863843)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly MemoTree Subscription | $0.99 | per month |


## Frequently asked questions

### Is 4Quadrants free?

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

### Is MemoTree free?

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

### Do 4Quadrants or MemoTree have ads?

MemoTree shows ads; 4Quadrants does not.

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

4Quadrants ships an update every 6 days, and MemoTree every 4 days. Most recently, 4Quadrants was updated on September 17, 2026 and MemoTree on September 10, 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.*