# Diagram vs Logical Fallacy Memory

The clearest difference is rating: Diagram at 5.0 against Logical Fallacy Memory's 1.0. Diagram also leads on in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

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

Diagram holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | Diagram | Logical Fallacy Memory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/diagram-daily-concept-summary/id6448944972/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/logical-fallacy-memory/id6484316242/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 7 MB |
| Requires iOS | **16.0** | 17 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cortex (Apps)](https://appshunter.io/developer/1685753630) | [山 汪](https://appshunter.io/developer/1740449088) |

## What reviewers say

### Diagram

[App page](https://appshunter.io/ios/app/diagram-daily-concept-summary/id6448944972)

Discover new concepts daily across 10 categories including business, economy, and psychology. Interactive swiping, breathing breaks, and quizzes enhance memory retention. New content is added regularly to keep learning fresh.

**Highlights:** Daily concept discovery, 100+ concepts, 10+ categories, Interactive swiping interface, Breathing breaks, Random quizzes, Regularly added new concepts

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Diagram free?

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

### Is Logical Fallacy Memory free?

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

### Which has better reviews, Diagram or Logical Fallacy Memory?

Diagram is rated higher. Diagram averages 5.0 out of 5 from 2 ratings, while Logical Fallacy Memory averages 1.0 from 1 ratings.

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

Neither Diagram nor Logical Fallacy Memory 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.*