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.
Math 9
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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.
Grade 9 Math Mastery
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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 โข 25 guided lessons, one for every topic on the course โข Worked examples that reveal one step at a time, so students can attempt the next line before seeing it โข Each lesson names the mistakes students actually make, and why they happen โข A short check at the end confirms the idea landed Practise until it sticks โข 400 questions across all five strands: Number, Algebra, Data, Geometry and Measurement, and Financial Literacy โข Difficulty adapts to the student and moves up as they improve โข Wrong answers come back automatically on a spaced repetition schedule, timed for just before they would be forgotten โข A mistake journal collects everything missed, with step-by-step solutions โข A 57-formula reference sheet, plus a quiz mode for memorising it Practise under real conditions โข Mini and full mock tests, timed โข A full exam simulation: 25 questions, 75 minutes, no hints, with a complete review afterwards โข An estimated achievement level after every attempt Keep them coming back โข Speed Drill, Survival, Race Mode, and a two-player duel on one device โข A new challenge question every day โข Streaks, daily goals and 21 achievements See exactly where they stand โข Mastery across all 25 topics at a glance โข A predicted achievement level, and the specific topics holding it back โข Weekly progress reports and an exam-readiness checklist โข 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
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Verdict
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
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.
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.
| Parameter | Math 9 | Grade 9 Math Mastery |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days โ better | Every 5 months |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 22 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Dung Do Tri | Eager.app |
In-app purchases
Math 9
No in-app purchases
Grade 9 Math Mastery
- Grade 9 Math Mastery โ Monthly$4.991 Month
- Grade 9 Math Mastery โ Annual$29.991 Year
Questions
Is Math 9 free?
Is Grade 9 Math Mastery free?
Do Math 9 or Grade 9 Math Mastery have ads?
Which is updated more often, Math 9 or Grade 9 Math Mastery?
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