Symbols vs Logical Fallacy Memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Symbols
Learn symbolic logic through interactive exercises and visual study cards. Master rules of inference, evaluate arguments, and translate everyday language into formal logic. Progress through various activities to build and solidify your understanding of logical reasoning.
- Comprehensive Studycards with clear explanations
- Interactive activities for skill mastery
- Validity: Evaluate pre-solved arguments
- Justification: Deduce missing argument steps
- Inference: Build valid arguments
- Translation: Convert statements to logical form
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Learn logic with Symbols, the app that teaches natural deduction and the rules of inference in an intuitive, accessible way. Our unique Studycards feature visual pictographs and interactive, step-by-step exercises that allow you to grasp each rule easily and quickly. Then, challenge yourself with activities specifically designed to practice those rules, building your skills progressively, and cementing them in your memory with every level completed. Why Symbols? Comprehensive Studycards: Learn essential rules like Modus Ponens, Modus Tollens, Disjunctive Syllogism, and many more through clear explanations and examples. Perfect for students and anyone looking to understand formal logic. Engaging Activities for Skill Mastery: Validity: Sharpen your critical thinking by evaluating pre-solved arguments. This unique activity provides the benefits of repetition without the tedium, helping you apply, recognize, and grow familiar with the rules of inference. Justification: Challenge your understanding with puzzle-like scenarios where you deduce missing argument steps. This deepens your comprehension and refines your application of logical rules within complex arguments. Inference: By this stage, the training wheels are off, and the student has to draw on everything they've learned so far. Their task is to mentally build a valid argument from what’s provided—or to recognize that no valid argument can be formed. What would normally be worked out slowly on paper is now done at the speed of thought. Translation: Translation helps students practice turning statements with indicator words and phrases into logical form. These indicator words, commonly found in logic books and courses, give students a sense of how to translate everyday language into formal logic. Translation breaks this process into levels, allowing students to track their progress and earn new scores as they build proficiency. Download Symbols for free and begin your journey into formal logic. Your free access includes the first level of every activity and the Modus Ponens study card, a must-have for getting started. For more advanced content and features, simply use our in-app purchases to continue building your logic skills. Start your journey of mastering the rules of inference now!
Logical Fallacy Memory
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.
- Active recall testing
- Spaced repetition learning
- Personalized mastery map
- Identify over 60 fallacies
- Real-world scenario analysis
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Logical Fallacy Memory app helps you to learn and master common logical fallacies. Level up your critical thinking. Learn to identify common logical pitfalls and transform the way you make decisions, debate, and perceive the world. Key Features: 1. Active Recall Testing: Learn faster by identifying fallacies in real-world scenarios. 2. Science-Based Learning: We use Spaced Repetition to hack your memory, ensuring you never forget the most common reasoning errors. 3. Personalized Mastery Map: A clear dashboard that shows exactly what you know and where you need more practice. 4. More than 60 fallacies available for study. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Symbols at 4.5 against Logical Fallacy Memory's 1.0. Symbols also leads on ratings volume (8 vs 1) and iOS requirement (12.0 vs 17). Logical Fallacy Memory's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Symbols sells 6 in-app purchases, starting at $3.99 per month and Logical Fallacy Memory sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Symbols holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Symbols has 8 ratings behind it against 1, so its average is the more settled of the two.
Symbols ships an update every 6 weeks, Logical Fallacy Memory every 2 weeks. The most recent releases landed on June 1, 2026 and July 23, 2026 respectively.
| Parameter | Symbols | Logical Fallacy Memory |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17 |
| Further details — not scored | ||
| Size | 78 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Rayes | 山 汪 |
Customer experience
Symbols
Logical Fallacy Memory
In-app purchases
Symbols
- Monthly Subscription$3.991 Month
- Weekly subscription3 Days trial$3.997 Days
- Monthly Subscription$6.991 Month
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- Three Month Subscription$18.993 Months
- Yearly Subscription$24.991 Year
- Annual Subscription$39.991 Year
Logical Fallacy Memory
- All Access (1 Month)$1.991 Month
- All Access (1 Year)$11.991 Year
Questions
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Is Logical Fallacy Memory free?
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