Math Juice vs NumDuel
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Math Juice
Practice math facts with engaging games designed by teachers. Features timed challenges and a coin-earning mode to make learning enjoyable for students, parents, and educators.
- Speed Run mode for timed practice
- Grind Mode with coin rewards
- Multiplication, division, addition, subtraction practice
- Perfect squares and combined operations
- Progress tracking for parents and teachers
- Reward structure for motivation
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Designed by teachers and tested by students, Math Juice is a brilliant way to make it more fun to practice math facts. Includes two modes: Speed Run - sprint practice...how many can you answer in 1 minute? Grind Mode - marathon practice...get in the zone and earn coins. The more you play, the more you win! Game types include: multiplication 1-12 division 1-12 addition 1-12 subtraction 1-12 perfect squares 11-20 combined multiplication & division 1-12 combined addition & subtraction 1-12 combined all 4 basic operations 1-12 sequential multiplication 1-12 and more! Parents - Math Juice is productive screen time. Swipe right after a game to see how much practice your future mathematician has done. There's a reward structure built in that you can use however you like. Tie game rewards to real life treats...for example: 3 in-game gold coins = 1 real-life ice cream cone...or whatever you can dream up. Teachers - there's no more engaging way for students to practice their math facts. Give it a try yourself and you'll see what we mean. Stat tracking allows you to set individual or class goals...competition AND cooperation both work with Math Juice. Students - enjoy "Productive Play"... in other words, have fun while knowing that the time you spend will benefit you down the road in your academic career. Be sure to contact us if you have any questions or suggestions.
NumDuel
A trivia game where you guess numerical answers to questions, earning points based on your proximity to the correct value. Compete against friends or random opponents in multiple rounds across various categories, or play solo to learn about the world through numbers.
- Guess numerical answers
- Score based on proximity
- Play against friends
- Play against random opponents
- Multiple game rounds
- Over 10 trivia categories
- Solo play mode
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NumDuel is a trivia quiz game in which there is no right or wrong. You don’t choose between different answer options; rather, you guess the answer to the question and get points depending how close you are to the correct answer. If this wouldn’t be fun enough, you play the game against your friends or random opponents, whoever you prefer. A very simple example question is: “How many people live in the USA” If you guess 250 million and the correct answer is 328 million, your score is 76 out of 100 points. The game consists of five rounds, each with three questions per player, and you can choose questions from over 10 different categories, ranging from science to entertainment. The goal is to have a higher score than your opponent. You can of course also play alone and enjoy learning about our world in numbers.
Screenshots
Verdict
The clearest difference is ads: Math Juice at none against NumDuel's shown. Math Juice also leads on ratings volume (18 vs 1) and monetization model (free vs ad-supported). NumDuel's advantage is update cadence (every 2 days vs every 2 months) and rating (5.0 vs 4.7). On price, review sentiment, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
NumDuel holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Math Juice has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 92% of Math Juice's written reviews are positive against 100% of NumDuel's.
Math Juice ships an update every 2 months, NumDuel every 2 days. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.
| Parameter | Math Juice | NumDuel |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (18 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 92.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 — better | 1 |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.2 — better | 13.0 |
| Further details — not scored | ||
| Size | 16 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Bryan Bazilauskas | Benjamin Raabe |
Customer experience
Math Juice
NumDuel
In-app purchases
Math Juice
No in-app purchases
NumDuel
No in-app purchases
Questions
Is Math Juice free?
Is NumDuel free?
Which has better reviews, Math Juice or NumDuel?
Do Math Juice or NumDuel have ads?
Which is updated more often, Math Juice or NumDuel?
Other comparisons
