# もってる帳 vs Day0

The clearest difference is in-app purchases: Day0 at none against もってる帳's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. もってる帳 sells 2 in-app purchases, starting at $1.99 per month. Day0 asks for nothing beyond the download.

もってる帳 ships an update every 3 days, Day0 every 6 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | もってる帳 | Day0 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Size | 67 MB | 31 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KAZUKI SAWASHIMA](https://appshunter.io/developer/6792463378) | [MARQUE & CROWN INC.](https://appshunter.io/developer/6793105578) |

## What reviewers say

### もってる帳

[App page](https://appshunter.io/ios/app/id6792463376)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO（月額） | $1.99 | per month |
| もってる帳 PRO | $39.99 | one-time |


### Day0

[App page](https://appshunter.io/ios/app/day0-private-diary/id6793105576)

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

**In-app purchases:** none


## Frequently asked questions

### Is もってる帳 free?

もってる帳 is free to download, with in-app purchases available.

### Is Day0 free?

Day0 is free to download, with no in-app purchases.

### Do もってる帳 or Day0 have ads?

Neither もってる帳 nor Day0 shows ads.

### Which is updated more often, もってる帳 or Day0?

もってる帳 ships an update every 3 days, and Day0 every 6 days. Most recently, もってる帳 was updated on October 31, 2026 and Day0 on October 31, 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.*