# Echo vs Shelf!

The clearest difference is in-app purchases: Echo at none against Shelf!'s 1. Echo also leads on iOS requirement (18.6 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Shelf! sells 1 one-off in-app purchase. Echo asks for nothing beyond the download.

## The numbers

| Metric | Echo | Shelf! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 5 MB | 3 MB |
| Requires iOS | **18.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MerchzDeals LLC](https://appshunter.io/developer/1805552315) | [Juan Casanueva](https://appshunter.io/developer/427769040) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-relationship-notebook/id6760734578)

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

**In-app purchases:** none


### Shelf!

[App page](https://appshunter.io/ios/app/shelf/id6772284541)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |


## Frequently asked questions

### Is Echo free?

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

### Is Shelf! free?

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

### Do Echo or Shelf! have ads?

Neither Echo nor Shelf! 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.*