# KFU BT SCAN vs Fallacy

The clearest difference is in-app purchases: KFU BT SCAN at none against Fallacy's 6. Fallacy's advantage is update cadence (fortnightly vs every 36 months). On price, ads, device support and iOS requirement there is nothing between them.

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

KFU BT SCAN ships an update every 36 months, Fallacy fortnightly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KFU BT SCAN | Fallacy |
| --- | --- | --- |
| 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 | — | 77.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 134 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [King Faisal University - جامعة الملك فيصل](https://appshunter.io/developer/570315734) | [VERTEX STUDIOS LTD](https://appshunter.io/developer/1805080787) |

## What reviewers say

### KFU BT SCAN

[App page](https://appshunter.io/ios/app/kfu-bt-scan/id1456230790)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is KFU BT SCAN free?

KFU BT SCAN is free to download, with no in-app purchases.

### Is Fallacy free?

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

### Do KFU BT SCAN or Fallacy have ads?

Neither KFU BT SCAN nor Fallacy shows ads.

### Which is updated more often, KFU BT SCAN or Fallacy?

KFU BT SCAN ships an update every 36 months, and Fallacy fortnightly. Most recently, KFU BT SCAN was updated on October 14, 2026 and Fallacy on October 24, 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.*