Fallacy: Brain Training Logic

Fallacy: Brain Training Logic

Critical Thinking Logic Puzzle

41 ratings
12 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • April 4, 2025
  • June 22, 2026

Features

Fallacy: Brain Training Logic screenshot #1 for iPhone
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Fallacy: Brain Training Logic screenshot #7 for iPhone
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About

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.

Identify 30+ logical fallacies
Recognize 20+ cognitive biases
Daily brain exercises
Timed reasoning challenges
Debate Mode with real-world arguments
Progressive difficulty levels
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What's New in Fallacy

1.6.2

June 22, 2026

Fixed performance issues for a smoother experience Still on our mission to make you think sharper

Subscription plans

Weekly Premium Access

Get unlimited access to all premium content.

$6.997 Days
Price Updates
May 25, 2026$6.99
October 24, 2025$3.99
September 16, 2025$2.99
May 11, 2025$0.99
How to cancel Fallacy subscription ⁉️
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In-App Purchases

$49.99

Lifetime Access - Premium

Get unlimited access to all premium content.

Events

Read more about Bust Fake News With Logic

Bust Fake News With Logic

Find hidden logic flaws in news headlines daily

Oct 3, 2025 Oct 19, 2025

Read more about Debate Mode is Live

Debate Mode is Live

Argue with AI on global topics. Train logic & wit.

May 16, 2025 May 31, 2025

User reviews

I actually LEARNED something?!?!

Downloaded, and I’ve always been curious about logical fallacies… but never done the research. I love your app, and it has a Duolingo feel to it, which is high praise. I’ve already gotten through the first 2 lessons and I’ve actually learned something (gasp). Great work!

Response from developer

Hi Sorimka, Thank you so much for taking the time to write this review — it genuinely means a lot to our small team. The "Duolingo feel" comparison is the highest compliment you could give us, because that was exactly the design goal: keep the lessons short, a little addictive, and actually informative by the end.

Propaganda framing

Partisan politics embedded. These topics can be taught without choosing a consistently biased contemporary frame.

Response from developer

Hi @non23, Thank you for raising this concern directly, and for taking the time to write the review. We want to address it seriously rather than dismiss it. Our intent with Challenge Mode and Debate Mode is to use real, contemporary examples so that reasoning lessons feel grounded and relevant — but those examples should be drawn from across the political spectrum and across ideological viewpoints, never weighted toward any single one. If the experience felt one-sided, that's a meaningful problem and one we want to fix. We're already conducting an editorial audit of the content library on exactly this axis, with a rebalance queued for upcoming releases. If you would be willing to share the specific scenarios that felt biased to you, please email us at hello@vertexstudios.online — that level of detail would directly shape the audit. We genuinely appreciate the feedback.

Great app for time killing!

Interesting, sleek, intuitive app with interesting questions. It would be sticky if user can experience more in the free version. I wanted to see more but was only stopped by the paywall.

Response from developer

Hi Boohyys, Thank you for the thoughtful review — and for the honest feedback on the paywall. This is exactly the kind of constructive note we want to hear.

amazing animation

very interesting app, smooth login, great tutorial

Response from developer

Thank you. The onboarding and tutorial got a lot of internal attention — making the first 60 seconds feel right matters more than any single feature — so it's great to see that come through on your side.

Great app to learn about logical thinking

Learned a lot about logical fallacies using this app. Very useful and informative

Response from developer

Hallo Milad, Vielen Dank for the kind review. Hearing that you actually learned something — and found the experience useful and informative — is the highest bar we set for ourselves. Most "brain games" exercise memory or reflexes; we wanted Fallacy to teach a skill you carry into real conversations and real decisions.

Developer apps

FAQ

What is Fallacy?

Fallacy is an educational brain training app designed to enhance logical reasoning and critical thinking skills. It focuses on identifying logical fallacies and cognitive biases through engaging gameplay based on real-world scenarios.

What types of logical fallacies does Fallacy teach?

Fallacy covers over 30 types of logical fallacies, including Ad Hominem, Straw Man, False Dichotomy, Appeal to Authority, and Post Hoc, among many others. It progresses through five difficulty levels.

Does Fallacy offer cognitive bias training?

Yes, Fallacy includes training for over 20 cognitive biases, such as confirmation bias, availability heuristic, and anchoring effect, providing a comprehensive approach to critical thinking development.

How does Fallacy track user progress?

The app uses a progressive brain training system with daily exercises. Users can track their cognitive growth through precision IQ scoring, fallacy detection speed, and accuracy ratings over 30, 60, and 90-day periods.

What is Debate Mode in Fallacy?

Debate Mode presents users with actual claims from news and social discourse. The objective is to identify logical fallacies, understand the flaws in the arguments, and practice building counter-arguments.

Does Fallacy have ads?

Yes, Fallacy contains advertisements. As a free app with in-app purchases, ads are part of the user experience.

What are the subscription options for Fallacy?

Fallacy offers several premium subscription plans: Monthly Premium Access for $1.99/month, Weekly Premium Access for $3.99/week, and Yearly Premium Access for $19.99/year. All plans include a 3-day free trial.

What devices is Fallacy available on?

Fallacy is compatible with iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users interested in cognitive training.