# Diary Notes vs KeyLocK

The clearest difference is in-app purchases: KeyLocK at none against Diary Notes's 1. KeyLocK also leads on iOS requirement (18.2 vs 26.0). Diary Notes's advantage is update cadence (every 4 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Diary Notes sells 1 in-app purchase, starting at $0.99 per month. KeyLocK asks for nothing beyond the download.

Diary Notes ships an update every 4 days, KeyLocK every 10 days. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Diary Notes | KeyLocK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 10 days |
| Size | 171 MB | 4 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tadahiro mori](https://appshunter.io/developer/1541301326) | [yuta kobayashi](https://appshunter.io/developer/1812917955) |

## What reviewers say

### Diary Notes

[App page](https://appshunter.io/ios/app/diary-notes-handwritten/id6479974763)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プラン | $0.99 | per month |


### KeyLocK

[App page](https://appshunter.io/ios/app/keylock/id6745560110)

**In-app purchases:** none


## Frequently asked questions

### Is Diary Notes free?

Diary Notes is free to download, with in-app purchases available.

### Is KeyLocK free?

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

### Do Diary Notes or KeyLocK have ads?

Neither Diary Notes nor KeyLocK shows ads.

### Which is updated more often, Diary Notes or KeyLocK?

Diary Notes ships an update every 4 days, and KeyLocK every 10 days. Most recently, Diary Notes was updated on October 9, 2026 and KeyLocK on October 1, 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.*