Comparison

Math 9 vs Grade 9 Math Mastery

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

Head to head
About

Math 9

Features
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Math 9 is an offline-first Grade 9 math coach built with Flutter. All theory, practice, and tests are stored in local JSON assets, delivering a fast, reliable experience without backend or media dependencies.

About

Grade 9 Math Mastery

Features
Read full description

Grade 9 Math Mastery prepares Ontario students for the province-wide Grade 9 mathematics assessment. It teaches each concept first, then gives 400 practice questions to prove it stuck. Most study apps only test. This one teaches. Learn the concept โ€ข 25 guided lessons, one for every topic on the course โ€ข Worked examples that reveal one step at a time, so students can attempt the next line before seeing it โ€ข Each lesson names the mistakes students actually make, and why they happen โ€ข A short check at the end confirms the idea landed Practise until it sticks โ€ข 400 questions across all five strands: Number, Algebra, Data, Geometry and Measurement, and Financial Literacy โ€ข Difficulty adapts to the student and moves up as they improve โ€ข Wrong answers come back automatically on a spaced repetition schedule, timed for just before they would be forgotten โ€ข A mistake journal collects everything missed, with step-by-step solutions โ€ข A 57-formula reference sheet, plus a quiz mode for memorising it Practise under real conditions โ€ข Mini and full mock tests, timed โ€ข A full exam simulation: 25 questions, 75 minutes, no hints, with a complete review afterwards โ€ข An estimated achievement level after every attempt Keep them coming back โ€ข Speed Drill, Survival, Race Mode, and a two-player duel on one device โ€ข A new challenge question every day โ€ข Streaks, daily goals and 21 achievements See exactly where they stand โ€ข Mastery across all 25 topics at a glance โ€ข A predicted achievement level, and the specific topics holding it back โ€ข Weekly progress reports and an exam-readiness checklist โ€ข A parent view, plus a progress summary you can share or email For parents Everything is built around one question: what should they work on next? The app answers it on every screen, names the topics that need attention, and links straight to the lesson that teaches them. You do not need to remember Grade 9 math to help. Free and Premium Algebra is free, with 15 practice questions a day and one mini mock test. Premium unlocks all five strands, every guided lesson, unlimited daily practice, full mock exams and the exam simulation, and parent reports. Works on iPhone and iPad. Premium starts with a 7-day free trial. Cancel any time. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple Account. Manage or cancel in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://eager.app/terms Privacy Policy: https://eager.app/privacy

Screenshots

Math 94 screens
Grade 9 Math Mastery4 screens

Verdict

The call

The clearest difference is in-app purchases: Math 9 at none against Grade 9 Math Mastery's 2. Math 9 also leads on update cadence (every 2 days vs every 5 months) and iOS requirement (13.0 vs 17.0). On price, ads 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. Grade 9 Math Mastery sells 2 in-app purchases, starting at $4.99 per month. Math 9 asks for nothing beyond the download.

UpkeepUpdate frequency

Math 9 ships an update every 2 days, Grade 9 Math Mastery every 5 months. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

Scorecard3 real differences ยท 3 level
Math 9 versus Grade 9 Math Mastery: the parameters behind the verdict, then further details
ParameterMath 9Grade 9 Math Mastery
PriceFreeFree
Update frequencyEvery 2 days โ€” betterEvery 5 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size22 MB7 MB
Age rating4+4+
DeveloperDung Do TriEager.app

In-app purchases

None

Math 9

No in-app purchases

2 purchases

Grade 9 Math Mastery

Subscriptions2
  • Grade 9 Math Mastery โ€” Monthly$4.991 Month
  • Grade 9 Math Mastery โ€” Annual$29.991 Year

Questions

Is Math 9 free?
Math 9 is free to download, with no in-app purchases.
Is Grade 9 Math Mastery free?
Grade 9 Math Mastery is free to download, with in-app purchases available.
Do Math 9 or Grade 9 Math Mastery have ads?
Neither Math 9 nor Grade 9 Math Mastery shows ads.
Which is updated more often, Math 9 or Grade 9 Math Mastery?
Math 9 ships an update every 2 days, and Grade 9 Math Mastery every 5 months. Most recently, Math 9 was updated on September 9, 2026 and Grade 9 Math Mastery on September 10, 2026.

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