# knockout! vs Flip Sandal Knockout

knockout! and Flip Sandal Knockout are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. knockout! sells 1 one-off in-app purchase and Flip Sandal Knockout sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | knockout! | Flip Sandal Knockout |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Daily | — |
| Size | 151 MB | 221 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Synthify Inc](https://appshunter.io/developer/1089257745) | [Mohsin Afzal](https://appshunter.io/developer/1817346817) |

## What reviewers say

### knockout!

[App page](https://appshunter.io/ios/app/knockout/id6759543551)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


### Flip Sandal Knockout

[App page](https://appshunter.io/ios/app/flip-sandal-knockout/id6788729003)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $24.99 | one-time |
| RemoveAds | $34.99 | one-time |


## Frequently asked questions

### Is knockout! free?

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

### Is Flip Sandal Knockout free?

Flip Sandal Knockout is free to download, with in-app purchases available.

### Do knockout! or Flip Sandal Knockout have ads?

Both knockout! and Flip Sandal Knockout show 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.*