Comparison

No Problem vs X

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

Head to head
About

No Problem

Features
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Struggling with math? No Problem lets you master numbers at your own pace with the ultimate practice companion designed just for you! This app transforms learning into a personalized and engaging experience, helping you build confidence and conquer any math challenge. Unlock Your Math Potential Say goodbye to one-size-fits-all lessons. Whether you're just starting with addition and subtraction or tackling complex multiplication and division, this app can adapt to your skill level. Choose between whole numbers and decimals, and decide how many questions you want to tackle in each session. It's your personal math gym! Features Customizable Difficulty: Start with simple addition & subtraction, or enable multiplication & division for a greater challenge. Flexible Modes: Practice with whole digits or switch to decimal mode to master decimal numbers and precision. Personalized Sessions: You can control the length of your practice by selecting the number of questions you want to solve. Instant Feedback & Review: Get automatic scoring after each quiz and review any incorrect answers to learn from your mistakes and try them again. Ready to Become a Math Whiz? Stop dreading math and start mastering it. Download now and take the first step towards numerical fluency.

About

X

Features
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X-Squared Challenge is a math app that challenges players to build equations โ€” not just solve them. Using integers, operators, parentheses, and exponents, players construct expressions that equal a target number while following the order of operations (PEMDAS). Three ways to play: LEARN โ€” Pick one operation and build a two-card equation. The gentlest introduction, with no login and no scoring. PRACTICE โ€” Three or four cards, every integer available, no pressure and no score. COMPETE โ€” Level 4 and Level 6 puzzles that earn points, with streaks and a score that follows you across devices. This game is unique in that it requires creative reasoning โ€” players must create equations rather than simply solve them. The game promotes enhanced learning for students and others practicing their understanding of the order of operations and math facts. Anyone who plays, regardless of their current level of mathematics, will improve their basic math skills. X-Squared Challenge was derived from a patented product called the X-Squared Math Card Deck, produced by Cognitive Card Games LLC. That order of operations deck is the only one available to the public with two important characteristics: it is both simple and complete. The elements are easy to use and understand in creating equations that conform to the rules of the order of operations. It is complete in that it includes all elements of PEMDAS: parentheses cards, exponent cards, multiplication, division, addition, and subtraction cards. The parentheses and exponent cards are transparent so they can overlay integer cards. The app incorporates all of the characteristics of the card deck.

Screenshots

No Problem4 screens
X4 screens

Verdict

The call

The clearest difference is update cadence: No Problem at every 6 days against X's every 2 months. X's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

No Problem ships an update every 6 days, X every 2 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

Scorecard2 real differences ยท 4 level
No Problem versus X: the parameters behind the verdict, then further details
ParameterNo ProblemX
PriceFreeFree
Update frequencyEvery 6 days โ€” betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.015.1 โ€” better
Further details โ€” not scored
Size3 MB29 MB
Age rating4+4+
DeveloperYunqing FeiCognitive Card Games LLC

In-app purchases

None

No Problem

No in-app purchases

None

X

No in-app purchases

Questions

Is No Problem free?
No Problem is free to download, with no in-app purchases.
Is X free?
X is free to download, with no in-app purchases.
Do No Problem or X have ads?
Neither No Problem nor X shows ads.
Which is updated more often, No Problem or X?
No Problem ships an update every 6 days, and X every 2 months. Most recently, No Problem was updated on September 15, 2026 and X on September 24, 2026.

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