Comparison

Sets Challenge vs Symbols

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

Head to head
About

Sets Challenge

Master fundamental set theory concepts through an engaging, multi-level game. Practice operations like intersection, union, and complement individually or with others. Ideal for students and educators, it can even be used for classroom presentations.

Highlights
  • Master set theory basics
  • Practice intersection, union, complement
  • Multi-level gameplay
  • Play solo or in groups
  • Classroom projector display option
Features
Read full description

Sets Challenge is a multi-level game that will help you master the basic of sets theory while having fun and challenging yourself and your colleagues. Play this game to learn about and use the intersection, union, complement, power sets and other operators. You can play by yourself or in groups. Sets Challenge may also be displayed via a projector for a really engaging in-class game. A must play for students; a must use for teachers!

About

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.

Highlights
  • 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
Features
Read full 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. 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!

Screenshots

Sets Challenge4 screens
Symbols4 screens

Verdict

The call

The clearest difference is review sentiment: Symbols at 100% against Sets Challenge's 33%. Symbols also leads on rating (4.5 vs 3.0) and update cadence (every 6 weeks vs every 4 months). Sets Challenge's advantage is in-app purchases (none vs 6) and iOS requirement (9.0 vs 12.0). On price, ratings volume, ads and device support 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. Symbols sells 6 in-app purchases, starting at $3.99 per month. Sets Challenge asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Symbols holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 33% of Sets Challenge's written reviews are positive against 100% of Symbols's.

UpkeepUpdate frequency

Sets Challenge ships an update every 4 months, Symbols every 6 weeks. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
Sets Challenge versus Symbols: the parameters behind the verdict, then further details
ParameterSets ChallengeSymbols
PriceFreeFree
Rating3.0 (4 ratings)4.5 (8 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings48 — better
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better12.0
Further details — not scored
Size8 MB78 MB
Age rating4+4+
DeveloperKnowledge Platform Pte LtdMatthew Rayes

Customer experience

Sets Challenge

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Symbols

All ratings8 ratings
Positive87.5%
Neutral12.5%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sets Challenge

No in-app purchases

6 purchases

Symbols

Subscriptions6
  • Monthly Subscription$3.991 Month
  • Weekly subscription3 Days trial$3.997 Days
  • Monthly Subscription$6.991 Month
Show 3 more
  • Three Month Subscription$18.993 Months
  • Yearly Subscription$24.991 Year
  • Annual Subscription$39.991 Year

Questions

Is Sets Challenge free?
Sets Challenge is free to download, with no in-app purchases.
Is Symbols free?
Symbols is free to download, with in-app purchases available.
Which has better reviews, Sets Challenge or Symbols?
Symbols is rated higher. Sets Challenge averages 3.0 out of 5 from 4 ratings, while Symbols averages 4.5 from 8 ratings.
Do Sets Challenge or Symbols have ads?
Neither Sets Challenge nor Symbols shows ads.
Which is updated more often, Sets Challenge or Symbols?
Sets Challenge ships an update every 4 months, and Symbols every 6 weeks. Most recently, Sets Challenge was updated on October 21, 2026 and Symbols on October 14, 2026.

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