# ソナエノート vs Unletter

The clearest difference is in-app purchases: ソナエノート at none against Unletter's 1. ソナエノート also leads on update cadence (weekly vs every 5 months). Unletter's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Unletter sells 1 one-off in-app purchase. ソナエノート asks for nothing beyond the download.

ソナエノート ships an update weekly, Unletter every 5 months. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ソナエノート | Unletter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 5 months |
| Size | 25 MB | 8 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matsusaka E.D.P Center](https://appshunter.io/developer/1553737486) | [Yusuke Yoshida](https://appshunter.io/developer/6777921286) |

## What reviewers say

### ソナエノート

[App page](https://appshunter.io/ios/app/id6760004374)

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

**In-app purchases:** none


### Unletter

[App page](https://appshunter.io/ios/app/unletter/id6777921284)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unletter Pro | $5.99 | one-time |


## Frequently asked questions

### Is ソナエノート free?

ソナエノート is free to download, with no in-app purchases.

### Is Unletter free?

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

### Do ソナエノート or Unletter have ads?

ソナエノート shows ads; Unletter does not.

### Which is updated more often, ソナエノート or Unletter?

ソナエノート ships an update weekly, and Unletter every 5 months. Most recently, ソナエノート was updated on November 5, 2026 and Unletter on November 10, 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.*