Unlock logic: Learn natural deduction and the rules of inference.
About Symbols: Learn Logic
Symbols: Learn Logic is an education app developed by Rys Apps.
Download Statistics
Symbols: Learn Logic has been downloaded 6.2 thousand times. In the last 30 days, the app was downloaded 120 times.
User Ratings
Symbols: Learn Logic is rated 3.42 out of 5 stars. The rating is based on 33 ratings.
App Information
Symbols: Learn Logic is FREE to download. The APK download size is 27.71 MB. The latest version available is 1.1.0. The last update was on September 22, 2025.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play October 2022.
Description
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.
To re-emphasize, Studycards help you learn and review, while Activities help you practice and test your skills in a gamified way.
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!
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I love using the app for brushing up on my logic. However, when doing sentence translations one of the study cards is incorrect. Making it annoying to progress for that section. It states K only if B, is K therefore B; when it should be, B therefore K. K is the consequent not the antecedent.
★★★★★Ducky· Mar 27, 2024
If It's not good then it's not bad implies if its bad then it's good.
★★★★★Michael Bleich· Nov 8, 2023
Great App! Comprehensive enough for a beginner trying to learn propositional logic. Would love to see a version for predicate logic. I love how it builds in difficulty without being so fatiguing; I can complete one activity and come back to it when I'm ready.
★☆☆☆☆Ian Scott· Mar 17, 2026
I paid for a month and then cancelled, and they cut off my access even thought I paid for the whole month.
★☆☆☆☆Ryan Baumann· Feb 9, 2026
Forces sign in in a game that really shouldn't need one. Edit: It's a privacy problem and adds additional complexity. It should be optional. There is absolutely NO reason to require a sign in on an app like this.
★★☆☆☆Kristopher Dick· Feb 26, 2025
It appears to work, but the lack of real-time feedback makes if pointless as a learning aid.
★☆☆☆☆Chris C· Mar 5, 2023
It says learn, but it doesn't teach how the equations work. Which I'm quite sure is simple if you've learned it. But I just wanted a quick fun logic game.
★★☆☆☆Jesse Ford· Apr 22, 2023
Decent app but I'm not paying monthly. Maybe I'm old-fashioned, but I'm more of a one-time fee kinda guy
★☆☆☆☆Eric Billiter· Jul 7, 2025
Deceptive practices of only showing signup/membership and prices after the fact. Pricing is ridiculous.
Google Play Rankings for Symbols: Learn Logic
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