# Echo vs knocky

The clearest difference is in-app purchases: knocky at none against Echo's 1. knocky also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.0). On price, update cadence and device support there is nothing between them.

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

Echo ships an update every 4 days, knocky every 3 days. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Echo | knocky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 13 MB | 83 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Thorsten Halle](https://appshunter.io/developer/1881398429) | [Adem Guclu](https://appshunter.io/developer/1192501965) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-pattern-game/id6760206563)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo Pro | $2.99 | one-time |


### knocky

[App page](https://appshunter.io/ios/app/knocky/id6761326370)

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

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is knocky free?

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

### Do Echo or knocky have ads?

Echo shows ads; knocky does not.

### Which is updated more often, Echo or knocky?

Echo ships an update every 4 days, and knocky every 3 days. Most recently, Echo was updated on October 12, 2026 and knocky on October 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.*