Comparison

Fallacy vs Fallacy Quest

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fallacy

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
Read full description

Do you trust your own thinking? Most people unknowingly fall for the same logical fallacies and cognitive biases every day — in conversations, on social media, in the news, and in their own decisions. Fallacy is the first brain training app built to sharpen one critical skill: your ability to think clearly, spot flawed reasoning, and win any argument with logic. PEOPLE YOU MEET — OUTSMART REAL-LIFE CHARACTERS Ever tried reasoning with a WhatsApp Uncle who forwards conspiracy theories? Or an overconfident AI that sounds smart but gets everything wrong? In People You Meet, you go head-to-head with characters inspired by people in your life. Spot their logical fallacies, identify their cognitive biases, plan your comeback, and win arguments using critical thinking instead of volume. Every character uses different reasoning tricks — this brain training mode teaches you more about logic and flawed thinking than any textbook. MASTER 30+ LOGICAL FALLACIES From Ad Hominem and Straw Man to the Slippery Slope and Appeal to Authority — master every major logical fallacy through real-world brain training scenarios. Each logical fallacy includes clear explanations, everyday examples, and progressive reasoning challenges that build genuine critical thinking. Whether you encounter these logical fallacies in the news, at work, or in a debate, you will spot them instantly after training. RECOGNIZE 20+ COGNITIVE BIASES Confirmation bias. Anchoring. The Dunning-Kruger effect. These invisible cognitive biases shape your decisions every day. Fallacy is the only brain training game that teaches you to detect cognitive biases in yourself and others through hands-on reasoning exercises. Understanding your cognitive biases is the foundation of stronger critical thinking and better decisions. DEBATE MODE — SHARPEN YOUR REASONING Step into real debates on real topics. Read opposing arguments, spot the logical fallacies hidden inside, and build powerful reasoning skills. Debate Mode is the ultimate brain training for critical thinking — improve how you argue, evaluate claims, and win debates using pure logic. Every debate round strengthens your reasoning and sharpens your ability to spot cognitive biases under pressure. CHALLENGE MODE — SPOT BIAS IN REAL NEWS Scroll through headlines and posts from real-world news sources. Your mission: spot the flawed reasoning and logical fallacies before time runs out. Challenge Mode is brain training for the real world — building the critical thinking and media literacy skills you need to detect cognitive biases in the news you consume daily. PRECISION IQ SCORING & PROGRESS TRACKING Your reasoning ability is measured with a precision IQ score that updates as you train. Track your 30, 60, and 90-day progress. Watch your critical thinking improve with clear insights into your cognitive growth. Brain training works best when you see results — Fallacy shows you exactly how your reasoning improves over time. DAILY BRAIN EXERCISES & 5 DIFFICULTY LEVELS Build a daily brain training habit with fresh logic puzzles and reasoning challenges every day. Maintain your streak and strengthen your mental fitness. Five difficulty levels take you from beginner to expert reasoning — keeping brain training challenging no matter your skill level. WHY FALLACY IS THE SMARTEST BRAIN TRAINING APP Other brain games train memory or math. Fallacy is the only brain training app focused on logical fallacies, cognitive biases, and real-world critical thinking. From planning a comeback against flawed reasoning to winning debates with logic — this is brain training that makes you smarter in conversations, arguments, and everyday life. Download Fallacy for free. Start brain training and master the critical thinking skills that actually matter. https://www.spotfallacy.com/privacy-policy https://www.spotfallacy.com/terms-and-conditions

About

Fallacy Quest

Features
Read full description

Learn to spot weak arguments and think more clearly. Fallacy Quest is an interactive learning app designed to make logical fallacies easy to understand, recognise, and remember. Learn common reasoning mistakes through concise explanations, realistic examples, personalised training, and engaging mini-games. As you improve, the app adapts to your weaker areas and helps reinforce concepts that need more practice. Features include: - Learn 24 common logical fallacies - Clear explanations, examples, and response strategies - Personalised training based on your weaker areas - Spaced review to reinforce learning - Interactive real-world scenarios - Quick games and daily challenges - Critical Thinking Score and mastery tracking - XP, levels, streaks, achievements, and progression - Track mastered fallacies and areas needing review - Sound effects and haptic feedback - Dark mode support - Progress saved on your device Whether you want to improve your reasoning, become better at evaluating arguments, strengthen debate skills, or simply understand logical fallacies, Fallacy Quest turns critical-thinking practice into an approachable and rewarding experience. Learn the patterns. Challenge the reasoning. Think more clearly.

Screenshots

Fallacy4 screens
Fallacy Quest4 screens

Verdict

The call

The clearest difference is in-app purchases: Fallacy Quest at none against Fallacy's 6. Fallacy's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Fallacy ships an update fortnightly, Fallacy Quest every 8 days. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Fallacy versus Fallacy Quest: the parameters behind the verdict, then further details
ParameterFallacyFallacy Quest
PriceFreeFree
Rating4.5 (58 ratings) — better—
Positive reviews76.9% of reviews—
Number of ratings58 — better—
Update frequencyFortnightlyEvery 8 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size95 MB8 MB
Age rating4+4+
DeveloperVERTEX STUDIOS LTDPaul Thornton

In-app purchases

6 purchases

Fallacy

Subscriptions5
  • Weekly Premium Access$6.997 Days
  • Monthly Subscription Fallacy7 Days trial$12.991 Month
  • Monthly Premium Access1 Month trial$12.991 Month
Show 2 more
  • Yearly Premium Access7 Days trial$49.991 Year
  • Yearly Subscription Fallacy7 Days trial$59.991 Year
One-time1
  • Lifetime Access - Premium$79.99
None

Fallacy Quest

No in-app purchases

Questions

Is Fallacy free?
Fallacy is free to download, with in-app purchases available.
Is Fallacy Quest free?
Fallacy Quest is free to download, with no in-app purchases.
Do Fallacy or Fallacy Quest have ads?
Fallacy Quest shows ads; Fallacy does not.
Which is updated more often, Fallacy or Fallacy Quest?
Fallacy ships an update fortnightly, and Fallacy Quest every 8 days. Most recently, Fallacy was updated on October 12, 2026 and Fallacy Quest on October 6, 2026.

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