Math 24 vs 9BLOCK
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Math 24
This app offers a classic arithmetic puzzle where players combine four numbers using basic operations to reach 24. It features progressive difficulty levels, a timed challenge mode, and integration with Game Center for leaderboards and achievements.
- Combine four numbers to make 24
- Addition, subtraction, multiplication, division
- Stage mode with 300 levels
- Speed mode for timed challenges
- Game Center leaderboards and achievements
- Help button for difficult questions
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Math 24 - Mental Math Cards is a classical math puzzle game. The game is designed to help people of all skill levels improve their arithmetic abilities and mental math skills. Elementary school students can also play it. But you may not solve some questions even you are a graduate student! ■ How To Play The rules are simple. Combine 4 numbers into 24 by addition(+), subtraction(-), multiplication(×) and division(÷). For example, try to use these 4 numbers: 2048 to make 24. The answer is (2+0)×(4+8)=24. The question is easy, but some questions are much more difficult. You can try this: 6 6 5 9 to make 24. ■ Stage Mode 15 stages and 300 well designed levels in total. The stages are from "Baby" to "King of Math", from easy to difficult. Touch the help button at the top-right corner if you can't solve a question. There are 3 chances to use help button in each stage. ■ Speed Mode 10 random questions! Make 24 as fast as you can! Touch the garbage can button at the top-right corner to change a question. There are 3 chances to change a question in each game. ■ Game Center "Math 24" is fully integrated with Game Center - providing both Leaderboards and Achievements. The Game Center features allow you to test your skills against the rest of the world and to share your scores and accomplishments with friends. ■ Features - Well-designed levels - Best user experience and graphics - Exciting speed mode ■ The App is suitable for you - If you like sudoku, brain training, math game or puzzle game. - If you want to play with friends or family. - If you want to improve you math skills, especially the mental math skills. Have fun!
9BLOCK
This minimalist game challenges your visual recall and focus by requiring you to memorize the order of numbers on nine blocks. It's a quick, engaging experience that's easy to learn but difficult to master.
- Memorize number order
- Tap numbers 1-9
- Improve longest streak
- Ranked progression
- Customize blocks and reveal time
- Track personal bests
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Nine blocks reveal nine numbers. Memorize the order before it disappears. Then tap from 1 to 9 without a mistake. It sounds simple. It isn't. 9BLOCK is a fast-paced, minimalist memory game that tests your visual recall, focus, speed, and consistency. Every attempt takes only seconds, making it easy to play and difficult to put down. PLAY YOUR WAY - Improve your longest streak - Climb through ranked progression - Customize the number of blocks and reveal time for practice - Track your personal bests - Challenge yourself with faster and harder rounds EASY TO LEARN. HARD TO MASTER. There are no complicated controls or lengthy tutorials. See, remember, and tap in order. Can you master 9BLOCK?
Screenshots
Verdict
The clearest difference is in-app purchases: 9BLOCK at none against Math 24's 4. 9BLOCK also leads on ads (none vs shown) and review sentiment (100% vs 76%). Math 24's advantage is ratings volume (2.2K vs 3) and iOS requirement (10.0 vs 15.1). On price, update cadence 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. Math 24 sells 4 one-off in-app purchases. 9BLOCK asks for nothing beyond the download.
9BLOCK holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Math 24 has 2.2K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 76% of Math 24's written reviews are positive against 100% of 9BLOCK's.
Math 24 ships an update every 6 weeks, 9BLOCK every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Math 24 | 9BLOCK |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.2K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 75.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.2K — better | 3 |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 33 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Peikun Duan | Duncan Fondren |
Customer experience
Math 24
9BLOCK
Bugs and requests
Math 24
Reported bugs
3 issues- Incorrect solutions provided
- Ads not working properly
- Syncing issues across devices
Requested features
3 requests- Add negative numbers and more features
- Option to favorite/save questions
- Difficulty levels (easy, medium, hard)
9BLOCK
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Math 24
- 12 Tips$1.39
- Remove Ads$2.39
- 20 Tips$2.39
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- 20 Tips + Remove Ads$3.99
9BLOCK
No in-app purchases
Questions
Is Math 24 free?
Is 9BLOCK free?
Which has better reviews, Math 24 or 9BLOCK?
Do Math 24 or 9BLOCK have ads?
Which is updated more often, Math 24 or 9BLOCK?
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