Comparison

Stay Sharp vs Grade 9 Math Practice

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

Head to head
About

Stay Sharp

Discover fascinating facts and bite-sized trivia personalized to your interests. Learn something new in seconds, delivered daily on your schedule. Turn screen time into brain time with fun, effortless learning.

Highlights
  • Personalized trivia based on interests
  • Bite-sized facts under 30 seconds
  • Customizable daily notifications
  • Fun and effortless learning
  • Wide range of topics
Features
Read full description

Feed your curiosity in seconds. Stay Sharp delivers fascinating facts and bite-sized trivia, personalized to your interests—right when you want them. Whether you love science, history, art, or just random facts from any field, Stay Sharp keeps your brain engaged and entertained. Stop scrolling aimlessly-start learning effortlessly. Choose your favorite topics, set your notification schedule, and get smart facts delivered daily. It’s fun, fast, and totally frictionless. Why you'll love Stay Sharp: Tailored Trivia – Pick your interests and enjoy content made just for you. Quick & Smart – Learn something amazing in under 30 seconds. Right on Time – Get notified when you choose to. Fun + Learning – Feel smarter every day, without the effort. Perfect for curious minds, lifelong learners, trivia lovers, or anyone who enjoys a daily spark of knowledge. Whether you're on a coffee break or killing time on the train - Stay Sharp makes every moment a learning opportunity. Stay curious. Stay sharp. Download now and turn your screen-time into brain-time. Terms and conditions: https://amanesoft.com/terms Privacy policy: https://amanesoft.com/privacy

About

Grade 9 Math Practice

Features
Read full description

Grade 9 Math Practice is an educational application designed to help students strengthen their understanding of mathematics through regular practice and assessment. The app focuses on practice-based learning using chapter-wise quizzes, mock tests, and daily quizzes aligned with the Grade 9 mathematics curriculum. Students can practice questions from individual chapters, attempt mock tests for overall syllabus revision, and review their performance using statistics. The app supports self-study, classroom learning, and exam preparation. Chapters Included 1. Number Systems Natural numbers, integers, rational and irrational numbers, real numbers, and number line representation. 2. Polynomials Definition of polynomials, types, degree, zeroes, factor theorem, and graphical representation. 3. Linear Equations in Two Variables Concept of linear equations, solution pairs, graphical method, consistency of solutions, and applications. 4. Coordinate Geometry Cartesian plane, coordinates of a point, quadrants, abscissa, ordinate, and plotting points. 5. Euclid’s Geometry Euclid’s definitions, axioms and postulates, common notions, Playfair’s axiom, and limitations. 6. Lines and Angles Intersecting and parallel lines, transversals, angle pairs, angle sum property, and related theorems. 7. Triangles Congruence of triangles, congruence criteria, isosceles triangle theorem, triangle inequality, and midpoint theorem. 8. Quadrilaterals Parallelogram properties, diagonal properties, special quadrilaterals, angle properties, and proofs. 9. Areas of Parallelograms and Triangles Area concepts, figures between parallels, area formulas, and applications. 10. Circles Circle definition, radius and diameter, chord properties, arcs and sectors, angles, and theorems. 11. Constructions Basic constructions and triangle constructions using SSS, SAS, and ASA methods. 12. Heron’s Formula Area calculation using Heron’s formula, semi-perimeter, special cases, and applications. 13. Surface Areas and Volumes Cube, cuboid, cylinder, cone, sphere, hemisphere, surface area, and volume. 14. Statistics Data collection, ungrouped and grouped data, frequency tables, mean calculation, bar graphs, and histograms. 15. Probability Probability concepts, experimental and theoretical probability, sample space, formulas, and applications. Key Features Chapter-wise practice quizzes Mock tests for full syllabus assessment Daily quiz for regular practice Performance statistics to track progress Content aligned with Grade 9 syllabus Simple and distraction-free interface Grade 9 Math Practice is suitable for classroom learning, independent study, and exam revision. The app is designed to support consistent practice and progress tracking.

Screenshots

Stay Sharp3 screens
Grade 9 Math Practice4 screens

Verdict

The call

The clearest difference is price: Stay Sharp at Free against Grade 9 Math Practice's $0.49. Grade 9 Math Practice's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement 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

Stay Sharp is free to download; Grade 9 Math Practice costs $0.49 up front. Stay Sharp sells 3 in-app purchases, starting at $2.99 per month. Grade 9 Math Practice asks for nothing beyond the download.

UpkeepUpdate frequency

Stay Sharp ships an update every 2 weeks, Grade 9 Math Practice fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Stay Sharp versus Grade 9 Math Practice: the parameters behind the verdict, then further details
ParameterStay SharpGrade 9 Math Practice
PriceFree — better$0.49
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size80 MB25 MB
Age rating12+12+
DeveloperAmane soft s.r.o.Manish Kumar

In-app purchases

3 purchases

Stay Sharp

Subscriptions2
  • Stay Sharp Monthly Sub3 Days trial$2.991 Month
  • Stay Sharp Annual Sub3 Days trial$24.991 Year
One-time1
  • Stay Sharp Premium Forever$39.99
None

Grade 9 Math Practice

No in-app purchases

Questions

Is Stay Sharp free?
Stay Sharp is free to download, with in-app purchases available.
Is Grade 9 Math Practice free?
Grade 9 Math Practice costs $0.49, with no in-app purchases.
Do Stay Sharp or Grade 9 Math Practice have ads?
Neither Stay Sharp nor Grade 9 Math Practice shows ads.
Which is updated more often, Stay Sharp or Grade 9 Math Practice?
Stay Sharp ships an update every 2 weeks, and Grade 9 Math Practice fortnightly. Most recently, Stay Sharp was updated on October 24, 2026 and Grade 9 Math Practice on October 25, 2026.

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