# Happy vs MooLog

The clearest difference is update cadence: MooLog at daily against Happy's every 4 months. 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.

Happy ships an update every 4 months, MooLog daily. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Happy | MooLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Size | 136 MB | 108 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kengo Sasaki](https://appshunter.io/developer/1529716162) | [Satoshi Yokokawa](https://appshunter.io/developer/1650823072) |

## What reviewers say

### Happy

[App page](https://appshunter.io/ios/app/happy-diary/id1532655499)

**Features:** macOS Compatibility

**In-app purchases:** none


### MooLog

[App page](https://appshunter.io/ios/app/moolog/id6744203994)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Happy free?

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

### Is MooLog free?

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

### Do Happy or MooLog have ads?

Neither Happy nor MooLog shows ads.

### Which is updated more often, Happy or MooLog?

Happy ships an update every 4 months, and MooLog daily. Most recently, Happy was updated on October 25, 2026 and MooLog on October 28, 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.*