Symbols vs Genius

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!

LEARN. REVIEW. REMEMBER FOR GOOD. Genius Memory turns your ideas, reading, and knowledge into a complete learning system. Create flashcards, review them at the right time using active recall and spaced repetition, and track your progress toward long-term memory. A LIBRARY BUILT AROUND ESSENTIAL KNOWLEDGE Explore book summaries, daily knowledge, and content designed to help you quickly understand important ideas. Save your favorites and easily continue reading whenever you want. STRUCTURED PREMIUM LEARNING PATHS Progress section by section through complete knowledge packs. Choose an automatic or manual pace, schedule your sessions, and clearly see which cards are available, learned, or mastered. Premium packs are available as one-time purchases. MORE ACTIVE REVIEW SESSIONS Genius trains you to retrieve information, not simply read it again. Cards can include examples, context, images, and voice playback adapted to the language you are learning. AI-POWERED LEARNING Turn a topic, note, or raw content into useful flashcards. Use smart tools and voice tutoring to explore ideas, rephrase concepts, and remember more effectively. TRACK YOUR PROGRESS Set goals, organize your packs, schedule learning paths, and clearly see what remains to be learned. You can also mark cards as already known or temporarily pause a learning path. Whether you are a student, professional, curious learner, or lifelong knowledge enthusiast, Genius Memory helps you build lasting knowledge, one card at a time.