# notaduo vs ThreeNote

The clearest difference is update cadence: ThreeNote at daily against notaduo's fortnightly. notaduo's advantage is iOS requirement (12.4 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

notaduo ships an update fortnightly, ThreeNote daily. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | notaduo | ThreeNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Size | 5 MB | 1 MB |
| Requires iOS | **12.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Fritz](https://appshunter.io/developer/1286338029) | [Jouni Erola](https://appshunter.io/developer/295758397) |

## What reviewers say

### notaduo

[App page](https://appshunter.io/ios/app/notaduo/id1639505053)

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

**In-app purchases:** none


### ThreeNote

[App page](https://appshunter.io/ios/app/threenote/id6736774101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is notaduo free?

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

### Is ThreeNote free?

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

### Do notaduo or ThreeNote have ads?

Neither notaduo nor ThreeNote shows ads.

### Which is updated more often, notaduo or ThreeNote?

notaduo ships an update fortnightly, and ThreeNote daily. Most recently, notaduo was updated on September 20, 2026 and ThreeNote on September 14, 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.*