# Fallacy vs Math Challenge

The clearest difference is in-app purchases: Math Challenge at none against Fallacy's 6. Fallacy's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Fallacy sells 6 in-app purchases, starting at $6.99 per 7 days. Math Challenge asks for nothing beyond the download.

Fallacy ships an update fortnightly, Math Challenge every 3 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Fallacy | Math Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (58 ratings)](https://appshunter.io/ios/app/fallacy-brain-training-logic/id6743923575/reviews)** | — |
| Number of ratings | **58** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VERTEX STUDIOS LTD](https://appshunter.io/developer/1805080787) | [晓 郭](https://appshunter.io/developer/1895645928) |

## What reviewers say

### Fallacy

[App page](https://appshunter.io/ios/app/fallacy-brain-training-logic/id6743923575)

This app teaches logical reasoning and critical thinking skills by turning the identification of logical fallacies and cognitive biases into a game. It offers structured brain training with daily exercises and timed challenges, using real-world scenarios and media to build applied intelligence.

**Highlights:** Identify 30+ logical fallacies, Recognize 20+ cognitive biases, Daily brain exercises, Timed reasoning challenges, Debate Mode with real-world arguments, Progressive difficulty levels

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $6.99 | per 7 days |
| Monthly Subscription Fallacy | $12.99 | per month |
| Monthly Premium Access | $12.99 | per month |
| Yearly Premium Access | $49.99 | per year |
| Yearly Subscription Fallacy | $59.99 | per year |
| Lifetime Access - Premium | $79.99 | one-time |


### Math Challenge

[App page](https://appshunter.io/ios/app/math-challenge-brain-battle/id6769259902)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fallacy free?

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

### Is Math Challenge free?

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

### Do Fallacy or Math Challenge have ads?

Neither Fallacy nor Math Challenge shows ads.

### Which is updated more often, Fallacy or Math Challenge?

Fallacy ships an update fortnightly, and Math Challenge every 3 weeks. Most recently, Fallacy was updated on October 16, 2026 and Math Challenge on October 7, 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.*