# quantum gates vs Circuit Challenge

The clearest difference is in-app purchases: Circuit Challenge at none against quantum gates's 2. Circuit Challenge also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. quantum gates sells 2 one-off in-app purchases. Circuit Challenge asks for nothing beyond the download.

## The numbers

| Metric | quantum gates | Circuit Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Size | 1 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Emir Alen Dervisagic](https://appshunter.io/developer/1863037020) |

## What reviewers say

### quantum gates

[App page](https://appshunter.io/ios/app/quantum-gates/id6451081177)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| original | Free | one-time |
| premium | $0.99 | one-time |


### Circuit Challenge

[App page](https://appshunter.io/ios/app/circuit-challenge/id6756811565)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is quantum gates free?

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

### Is Circuit Challenge free?

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

### Do quantum gates or Circuit Challenge have ads?

Neither quantum gates nor Circuit Challenge shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*