# Just Note2 vs Diary AI

The clearest difference is price: Just Note2 at Free against Diary AI's $0.99. Just Note2 also leads on iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Just Note2 is free to download; Diary AI costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Just Note2 ships an update every 10 months, Diary AI every 16 months. The most recent releases landed on September 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Just Note2 | Diary AI |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 16 months |
| Size | 24 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KOSUKE OSAWA](https://appshunter.io/developer/1711402229) | [Juiko Ong](https://appshunter.io/developer/639263890) |

## What reviewers say

### Just Note2

[App page](https://appshunter.io/ios/app/just-note2/id6469047079)

**Features:** macOS Compatibility

**In-app purchases:** none


### Diary AI

[App page](https://appshunter.io/ios/app/diary-ai/id6532618062)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Just Note2 free?

Just Note2 is free to download, with no in-app purchases.

### Is Diary AI free?

Diary AI costs $0.99, with no in-app purchases.

### Do Just Note2 or Diary AI have ads?

Neither Just Note2 nor Diary AI shows ads.

### Which is updated more often, Just Note2 or Diary AI?

Just Note2 ships an update every 10 months, and Diary AI every 16 months. Most recently, Just Note2 was updated on September 9, 2026 and Diary AI on September 29, 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.*