# Logical Fallacy Memory vs Biasphera

The clearest difference is in-app purchases: Biasphera at none against Logical Fallacy Memory's 2. Logical Fallacy Memory's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Logical Fallacy Memory sells 2 in-app purchases, starting at $1.99 per month. Biasphera asks for nothing beyond the download.

Logical Fallacy Memory ships an update every 2 weeks, Biasphera every 2 months. The most recent releases landed on July 23, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Logical Fallacy Memory | Biasphera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/logical-fallacy-memory/id6484316242/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 5 MB |
| Requires iOS | 17 | 17 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [山 汪](https://appshunter.io/developer/1740449088) | [Oliver Lapsley](https://appshunter.io/developer/1806948719) |

## What reviewers say

### Logical Fallacy Memory

[App page](https://appshunter.io/ios/app/logical-fallacy-memory/id6484316242)

Master common logical fallacies and enhance your critical thinking skills. This app uses active recall and spaced repetition to help you identify reasoning errors in real-world situations. Track your progress with a personalized mastery map and learn over 60 unique fallacies.

**Highlights:** Active recall testing, Spaced repetition learning, Personalized mastery map, Identify over 60 fallacies, Real-world scenario analysis

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access (1 Month) | $1.99 | per month |
| All Access (1 Year) | $11.99 | per year |


### Biasphera

[App page](https://appshunter.io/ios/app/biasphera/id6744299539)

**In-app purchases:** none


## Frequently asked questions

### Is Logical Fallacy Memory free?

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

### Is Biasphera free?

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

### Do Logical Fallacy Memory or Biasphera have ads?

Neither Logical Fallacy Memory nor Biasphera shows ads.

### Which is updated more often, Logical Fallacy Memory or Biasphera?

Logical Fallacy Memory ships an update every 2 weeks, and Biasphera every 2 months. Most recently, Logical Fallacy Memory was updated on July 23, 2026 and Biasphera on September 8, 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.*