# EchoPaper vs Sonic Clean

The clearest difference is in-app purchases: Sonic Clean at none against EchoPaper's 3. Sonic Clean also leads on iOS requirement (16.0 vs 18.0). EchoPaper's advantage is device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. EchoPaper sells 3 one-off in-app purchases. Sonic Clean asks for nothing beyond the download.

## The numbers

| Metric | EchoPaper | Sonic Clean |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Size | 16 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HIROMOTO TSUJI](https://appshunter.io/developer/1106215904) | [DIGITALSTALK PRIVATE LIMITED](https://appshunter.io/developer/1519420254) |

## What reviewers say

### EchoPaper

[App page](https://appshunter.io/ios/app/echopaper-record-and-summarize/id6751619057)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Notebook | $2.99 | one-time |
| Pen | $4.99 | one-time |


### Sonic Clean

[App page](https://appshunter.io/ios/app/sonic-clean-water-eject/id6785198297)

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

**In-app purchases:** none


## Frequently asked questions

### Is EchoPaper free?

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

### Is Sonic Clean free?

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

### Do EchoPaper or Sonic Clean have ads?

Neither EchoPaper nor Sonic Clean shows ads.

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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.*