# UDWriter vs マナーSOS

The clearest difference is in-app purchases: マナーSOS at none against UDWriter's 2. マナーSOS also leads on update cadence (every 10 days vs every 2 months). UDWriter's advantage is iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. UDWriter sells 2 one-off in-app purchases. マナーSOS asks for nothing beyond the download.

UDWriter ships an update every 2 months, マナーSOS every 10 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | UDWriter | マナーSOS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 9 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shamrock Records, Inc.](https://appshunter.io/developer/443431466) | [SANWA Inc.](https://appshunter.io/developer/1878028373) |

## What reviewers say

### UDWriter

[App page](https://appshunter.io/ios/app/udwriter/id632058683)

A handwriting memo app designed with Universal Design principles for intuitive use. Offers three color options and a simple swipe gesture to clear the screen. Accessible for all users from the first use.

**Highlights:** Universal Design principles, Handwriting memo functionality, Select 3 colors, Swipe to clear all, Intuitive for all users

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Development Support + Logo on/off option | $2.99 | one-time |
| Input Text by Using Speech Recognition | $4.99 | one-time |


### マナーSOS

[App page](https://appshunter.io/ios/app/sos/id6760735343)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UDWriter free?

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

### Is マナーSOS free?

マナーSOS is free to download, with no in-app purchases.

### Do UDWriter or マナーSOS have ads?

Neither UDWriter nor マナーSOS shows ads.

### Which is updated more often, UDWriter or マナーSOS?

UDWriter ships an update every 2 months, and マナーSOS every 10 days. Most recently, UDWriter was updated on October 12, 2026 and マナーSOS on October 11, 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.*