9th Grade Math Challenge vs K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
9th Grade Math Challenge
Test your 9th-grade math skills with a challenging game featuring 100 levels and puzzles. Track your progress, share your score with a certificate, and compete with friends. Detailed solutions are provided for better understanding.
- 100 math questions/levels
- Math puzzles
- Score certificate creation
- Friend challenges
- Step-by-step solutions
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Challenge your mind with 9th grade level Math and see where you stand. There are 100 questions/levels sprinkled with some interesting Math puzzles in between. Create and share a certificate of your final score. Challenge your friends and family to see who can score the most. Watch step-by-step solution for better understanding of answers.
K
Master K-12 math with interactive games and practice covering algebra, calculus, and more. Features AI-powered explanations, quizzes, and a graphing calculator for on-the-go learning.
- Comprehensive math topics
- AI-powered solver with explanations
- Interactive quizzes
- Smart graphing calculator
- Video lessons and tips
- Offline practice
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Master All Grade Math with us! Take your math skills to the next level with our interactive and engaging learning experience. Whether you're preparing for exams or just want to strengthen your knowledge, this app has everything you need! Why Choose Our App? - Comprehensive Topics – Cover algebra, calculus, trigonometry, probability, and more. - AI-Powered Solver – Get instant solutions and step-by-step explanations. - Interactive Quizzes – Test your knowledge with fun and challenging exercises. - Smart Graphing Calculator – Solve complex equations with ease. - Video Lessons & Tips – Learn from expert instructors anytime, anywhere. - Practice Anytime – Offline access ensures you can study on the go. Download now and unlock the power of math mastery! Terms of use: https://thanhbkap.github.io/M4U-Term-And-Use/ Happy learning!
Screenshots
Verdict
The clearest difference is review sentiment: 9th Grade Math Challenge at 100% against K's 0%. 9th Grade Math Challenge also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). K's advantage is rating (4.5 vs 3.8) and update cadence (fortnightly vs every 7 months). On price, in-app purchases, monetization model 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
Both are free to download. 9th Grade Math Challenge sells 1 one-off in-app purchase and K sells 8 in-app purchases, starting at $1.99 per 3 months. Whichever you choose, the download price is not the number that matters.
K holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: K has 133 ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 100% of 9th Grade Math Challenge's written reviews are positive against 0% of K's, so the app with the better star average is not the one people write more warmly about.
9th Grade Math Challenge ships an update every 7 months, K fortnightly. The most recent releases landed on June 1, 2026 and September 24, 2026 respectively.
| Parameter | 9th Grade Math Challenge | K |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (12 ratings) | 4.5 (133 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 12 | 133 — better |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 235 MB |
| Age rating | 4+ | 4+ |
| Developer | IT365 Solutions Inc | DEVWORLD VIETAM COMPANY LIMITED |
Customer experience
9th Grade Math Challenge
K
In-app purchases
9th Grade Math Challenge
- Remove all Ads from Math 9$0.99
K
- Three Months VIP$1.993 Months
- Learning Premium Monthly Plan$1.991 Month
- One Month VIP3 Days trial$4.991 Month
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- Learning Premium HalfYear Plan$5.996 Months
- Learning Premium Annual Plan$9.991 Year
- Six Months VIP3 Days trial$24.996 Months
- 1 Year VIP3 Days trial$49.991 Year
- No ads Pack$14.99
Questions
Is 9th Grade Math Challenge free?
Is K free?
Which has better reviews, 9th Grade Math Challenge or K?
Do 9th Grade Math Challenge or K have ads?
Which is updated more often, 9th Grade Math Challenge or K?
Other comparisons
