# ロック画面メモ vs PDF Scanner

The clearest difference is in-app purchases: ロック画面メモ at none against PDF Scanner's 2. ロック画面メモ also leads on update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Scanner sells 2 in-app purchases, starting at $9.99 per 7 days. ロック画面メモ asks for nothing beyond the download.

ロック画面メモ ships an update every 5 days, PDF Scanner every 2 months. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ロック画面メモ | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 7 MB | 18 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CapCat LLC](https://appshunter.io/developer/1654095841) | [DASHING ENTERPRISES LIMITED](https://appshunter.io/developer/6792976544) |

## What reviewers say

### ロック画面メモ

[App page](https://appshunter.io/ios/app/lockscreenmemo/id6787902681)

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

**In-app purchases:** none


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-scan-pdf-and-docs/id6793353965)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Nova | $9.99 | per 7 days |
| Yearly Nova | $39.99 | per year |


## Frequently asked questions

### Is ロック画面メモ free?

ロック画面メモ is free to download, with no in-app purchases.

### Is PDF Scanner free?

PDF Scanner is free to download, with in-app purchases available.

### Do ロック画面メモ or PDF Scanner have ads?

Neither ロック画面メモ nor PDF Scanner shows ads.

### Which is updated more often, ロック画面メモ or PDF Scanner?

ロック画面メモ ships an update every 5 days, and PDF Scanner every 2 months. Most recently, ロック画面メモ was updated on October 31, 2026 and PDF Scanner on November 5, 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.*