# PositiveDiary vs AI絵日記

The clearest difference is in-app purchases: PositiveDiary at none against AI絵日記's 3. PositiveDiary also leads on update cadence (every 9 days vs every 3 weeks). AI絵日記's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AI絵日記 sells 3 in-app purchases, starting at $0.49 per month. PositiveDiary asks for nothing beyond the download.

PositiveDiary ships an update every 9 days, AI絵日記 every 3 weeks. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PositiveDiary | AI絵日記 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 14 MB | 20 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Infinity Inc. (Apps)](https://appshunter.io/developer/1680741877) | [Koudai Kudou](https://appshunter.io/developer/1744671690) |

## What reviewers say

### PositiveDiary

[App page](https://appshunter.io/ios/app/positivediary/id6737477917)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI絵日記

[App page](https://appshunter.io/ios/app/ai/id6748383978)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| フルバージョンへのアップデート | $0.49 | per month |
| Pro版へのアップグレード | $0.99 | one-time |
| Pro版へのアップグレード | $2.99 | one-time |


## Frequently asked questions

### Is PositiveDiary free?

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

### Is AI絵日記 free?

AI絵日記 is free to download, with in-app purchases available.

### Do PositiveDiary or AI絵日記 have ads?

PositiveDiary shows ads; AI絵日記 does not.

### Which is updated more often, PositiveDiary or AI絵日記?

PositiveDiary ships an update every 9 days, and AI絵日記 every 3 weeks. Most recently, PositiveDiary was updated on September 9, 2026 and AI絵日記 on September 17, 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.*