# Contra vs Zéro Euh

The clearest difference is in-app purchases: Zéro Euh at none against Contra's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Contra sells 2 in-app purchases, starting at $4.99 per month. Zéro Euh asks for nothing beyond the download.

## The numbers

| Metric | Contra | Zéro Euh |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Freemium | — |
| Size | 75 MB | 47 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Taj Singh](https://appshunter.io/developer/1847074810) | [Yassin Kaadouch Hajjioui](https://appshunter.io/developer/6817034066) |

## What reviewers say

### Contra

[App page](https://appshunter.io/ios/app/contra/id6761030724)

Engage in structured debates with an AI opponent to sharpen your critical thinking skills. Receive detailed feedback on your logic, rhetoric, evidence, and originality. Practice solo, challenge friends, or join public arenas on diverse topics.

**Highlights:** AI argumentative opponent, Detailed performance scoring, AI coaching and feedback, Solo and 1v1 challenges, Public debate arenas, Daily new topics, Real-time streaming debates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Abonnement annuel | $39.99 | per year |


### Zéro Euh

[App page](https://appshunter.io/ios/app/zero-euh/id6817034064)

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

**In-app purchases:** none


## Frequently asked questions

### Is Contra free?

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

### Is Zéro Euh free?

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

### Do Contra or Zéro Euh have ads?

Neither Contra nor Zéro Euh 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.*