ZIML vs kMath
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZIML
This app offers daily math problems and solutions to sharpen reasoning and thinking skills across various school grades. It provides access to global math competitions, leaderboards, and forums for discussion.
- Daily math problems
- Full solutions provided
- Progress tracking
- Global math contests
- Leaderboards
- Discussion forums
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Zoom International Math League (ZIML) is the Areteem Institute's application for math practice and competitions all over the world. If you or your student want to keep the mind sharp by "zooming in" on math skills, look no further than the ZIML app! Straight from the minds of Areteem's experts, the free ZIML app offers "Daily Magic Spells" to test reasoning and thinking abilities by offering math problems every day from all grades of school. Topics covered include a wide range of mathematics, including: -Algebra -Geometry -Counting and Probability (Combinatorics) -Number Theory The free app features: -A free math problem each day (the Daily Magic Spells) -Full solutions to learn and improve -Account creation (free) to track your progress -Full integration with the ZIML web app (ziml.areteem.org) -Leaderboard of the Daily Magic Spells -Forums for Discussion and Challenging Weekly Brain Potions Subscription features: -Monthly Contests: Five divisions of math contests for various age ranges: --Division E: problem solving using the math concepts in standard math curriculum in upper elementary school students (grade 4&5) --Division M: problem solving using the math concepts in standard math curriculum in middle school students (grades 6-8) --Division H: problem solving using the math concepts in standard math curriculum in high school students (grades 9-12) --Junior Varsity Division: problem solving for students with experiences in math contests at the level of AMC 10 & 12. --Varsity Division: problem solving for students with advanced experiences in math contests at the level of AIME and higher. - Subscribe for 9.99$ per month to attempt the Monthly contest. - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms of use: https://ziml.areteem.org/ziml/termsofuse.php
kMath
Prepare for the International Kangaroo Mathematics Contest with thousands of practice questions and explanations. Covers six levels from grade 1 to 12, with new content updated monthly. Offers an optional subscription for enhanced features.
- Thousands of practice questions
- Detailed explanations
- Six learning levels (grade 1-12)
- Monthly content updates
- Auto-renewing subscription option
- Progress tracking
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Users can prepare for IKMC - International Kangaroo Mathematics Contest with thousands of questions an explanations. New questions and explanations will be updated monthly. There are 6 levels from Pre-Ecolier to Student to practice with variety knowledge from grade 1 to 12. You can upgrade to PRO by purchasing an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 3 month ($14.99) durations • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase • Privacy policy: https://sites.google.com/view/kangaroo-math-app • Terms of Use: https://sites.google.com/view/kmath-terms If you have any problems, please take a screenshot and send it to our email: izi.app.pro@gmail.com . Thank you so much.
Screenshots
Verdict
ZIML and kMath both sit at 4.3 stars, but that hides the real split: 71% of kMath's written reviews are positive against 50% of ZIML's. kMath also leads on update cadence (every 3 weeks vs every 2 months). ZIML's advantage is iOS requirement (9.0 vs 13.0). On price, rating, ratings volume and ads 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. ZIML sells 1 in-app purchase, starting at $9.99 per month and kMath sells 1 in-app purchase, starting at $14.99 per 3 months. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.3 for ZIML against 4.3 for kMath. Both are backed by a comparable volume of ratings — 7 and 6 respectively. Written reviews are what separate them: 50% of ZIML's written reviews are positive against 71% of kMath's.
ZIML ships an update every 2 months, kMath every 3 weeks. The most recent releases landed on September 22, 2026 and October 5, 2026 respectively.
| Parameter | ZIML | kMath |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (7 ratings) | 4.3 (6 ratings) |
| Positive reviews | 50.0% of reviews | 71.4% of reviews — better |
| Number of ratings | 7 — better | 6 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 54 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | GyroDimensions, Inc. | Yen Nguyen |
Customer experience
ZIML
kMath
In-app purchases
ZIML
- Monthly Contest$9.991 Month
kMath
- Member$14.993 Months








