# My Size Notes vs ロック付チャットメモ帳

The clearest difference is in-app purchases: ロック付チャットメモ帳 at none against My Size Notes's 1. ロック付チャットメモ帳 also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. My Size Notes sells 1 one-off in-app purchase. ロック付チャットメモ帳 asks for nothing beyond the download.

My Size Notes ships an update every 2 weeks, ロック付チャットメモ帳 monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | My Size Notes | ロック付チャットメモ帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 11 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Hikari Mano](https://appshunter.io/developer/1478835190) | [TOMOYUKI NISHIO](https://appshunter.io/developer/6797396165) |

## What reviewers say

### My Size Notes

[App page](https://appshunter.io/ios/app/my-size-notes-organize-data/id6753784164)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $2.99 | one-time |


### ロック付チャットメモ帳

[App page](https://appshunter.io/ios/app/id6797396163)

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

**In-app purchases:** none


## Frequently asked questions

### Is My Size Notes free?

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

### Is ロック付チャットメモ帳 free?

ロック付チャットメモ帳 is free to download, with no in-app purchases.

### Do My Size Notes or ロック付チャットメモ帳 have ads?

My Size Notes shows ads; ロック付チャットメモ帳 does not.

### Which is updated more often, My Size Notes or ロック付チャットメモ帳?

My Size Notes ships an update every 2 weeks, and ロック付チャットメモ帳 monthly. Most recently, My Size Notes was updated on November 5, 2026 and ロック付チャットメモ帳 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.*