# つくるんです OMELET vs Observation Note

The clearest difference is price: つくるんです OMELET at Free against Observation Note's $5.99. つくるんです OMELET also leads on iOS requirement (13.0 vs 18.5). Observation Note's advantage is update cadence (every 6 days vs every 15 months). On ads, in-app purchases and device support there is nothing between them.

つくるんです OMELET is free to download; Observation Note costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

つくるんです OMELET ships an update every 15 months, Observation Note every 6 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | つくるんです OMELET | Observation Note |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 days** |
| Size | 35 MB | 1 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Osaka Kyoiku University](https://appshunter.io/developer/1049614066) | [Hajime Sasaki](https://appshunter.io/developer/1823569302) |

## What reviewers say

### つくるんです OMELET

[App page](https://appshunter.io/ios/app/omelet/id1091278794)

**Features:** macOS Compatibility

**In-app purchases:** none


### Observation Note

[App page](https://appshunter.io/ios/app/observation-note/id6747956503)

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

**In-app purchases:** none


## Frequently asked questions

### Is つくるんです OMELET free?

つくるんです OMELET is free to download, with no in-app purchases.

### Is Observation Note free?

Observation Note costs $5.99, with no in-app purchases.

### Do つくるんです OMELET or Observation Note have ads?

Neither つくるんです OMELET nor Observation Note shows ads.

### Which is updated more often, つくるんです OMELET or Observation Note?

つくるんです OMELET ships an update every 15 months, and Observation Note every 6 days. Most recently, つくるんです OMELET was updated on November 2, 2026 and Observation Note 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.*