# Contra vs Redo

The clearest difference is in-app purchases: Redo at none against Contra's 2. Redo also leads on update cadence (weekly vs every 2 months). 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. Redo asks for nothing beyond the download.

Contra ships an update every 2 months, Redo weekly. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Contra | Redo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 75 MB | 39 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Taj Singh](https://appshunter.io/developer/1847074810) | [Neal Shah](https://appshunter.io/developer/1780140474) |

## 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 |


### Redo

[App page](https://appshunter.io/ios/app/redo-improve-speaking/id6799077682)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contra free?

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

### Is Redo free?

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

### Do Contra or Redo have ads?

Neither Contra nor Redo shows ads.

### Which is updated more often, Contra or Redo?

Contra ships an update every 2 months, and Redo weekly. Most recently, Contra was updated on September 25, 2026 and Redo on October 10, 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.*