Comparison

Moon. vs Math Duel

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

Head to head
About

Moon.

Explore detailed information about the moon with a 3D model, lunar phases, and rise/set times. Research moon data for any past or future date and receive notifications for full and new moons.

Highlights
  • 3D Moon model
  • Lunar Phase tracking
  • Moonrise/Moonset times
  • Lunar Illumination
  • Research moon data for any date
  • Full and new moon notifications
Features
Read full description

Moon is a perfect resource to help you learn about the moon. Moon constantly updates a panel of information that tells you everything you want to know about the moon. *3D Moon model *Lunar Phase *Moonrise/Moonset *Lunar Illumination *Lunar Azimuth (where it is in the sky) *Lunar Altitude (angle above the horizon) *Distance to the moon (in miles, kilometers, feet, meters, Eiffel Towers, and Earths) *Phase Timeline (iPad Only) Moon also allows you to research information about the moon at ANY date in past or in the future. You could look up what the lunar phase will be on, say, your birthday...in 10 years. With Moon you can also schedule notifications for full or new moons so you will always be ready to handle the mysterious things that happen during full moons. Features: *Constantly updated moon information for your current location *Ability to research moon information for ANY date EVER based on your current location or any location you choose *Full and new moon notifications *Add Full/New moon dates to your calendar *Custom Location settings *No internet connection required ***Check out Moon+ for added features such as a phase timeline on iPhone, drag to change date, and an adfree experience*** Please email cdvconcepts@gmail.com with any comments, suggestions, or questions.

About

Math Duel

Engage in a fun, competitive math game for two players on a single device. Improve basic math skills and strategic thinking with customizable equations and modes. Ideal for classrooms or home practice, it encourages collaboration and personalized learning.

Highlights
  • Two-player split-screen mode
  • Single player practice
  • Customizable equations
  • Teacher-adjustable settings
  • Basic math skill improvement
  • Strategic thinking development
Features
Read full description

Math Duel - 2 Player Math Game Challenge a friend or go solo! Math Duel is the ultimate split-screen math game for kids, students, and classrooms. Two players compete head-to-head on the same device, making math practice fast, fun, and competitive. Perfect for Schools and Home Learning. Used by teachers worldwide, Math Duel turns math drills into exciting duels. Customize difficulty for each player independently, ideal for differentiated instruction and personalized learning. Why Kids and Teachers Love Math Duel: - 1 or 2 players on one device, no extra hardware needed - Split-screen mode built for tablets and phones - Customizable equations for addition, subtraction, multiplication and division - Adjustable difficulty per player, great for mixed-ability classrooms - Positive reinforcement keeps students motivated - Frustration-free design for all skill levels - Trusted with over 1 million games played Built for the Classroom, Fun Enough for Home. Whether it's math fact fluency practice, a classroom warm-up, or friendly competition at home, Math Duel makes arithmetic engaging for all ages. Students sharpen mental math skills without even realizing they're learning. Great for: - Elementary and middle school students - Teachers looking for EdTech tools - Parents seeking educational games for kids - Homeschool families Have a feature idea? Share it directly with Erik, the developer, from inside the app!

Screenshots

Moon.1 screens
Math Duel4 screens

Verdict

The call

The clearest difference is rating: Math Duel at 4.5 against Moon.'s 2.6. Math Duel also leads on review sentiment (64% vs 34%). Moon.'s advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 15.0). On price, ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Math Duel sells 1 one-off in-app purchase. Moon. asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Math Duel holds the better App Store score, 4.5 against 2.6. Both are backed by a comparable volume of ratings — 288 and 236 respectively. Written reviews point the same way: 34% of Moon.'s written reviews are positive against 64% of Math Duel's.

UpkeepUpdate frequency

Moon. ships an update every 2 months, Math Duel every 6 weeks. The most recent releases landed on November 10, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
Moon. versus Math Duel: the parameters behind the verdict, then further details
ParameterMoon.Math Duel
PriceFreeFree
Rating2.6 (288 ratings)4.5 (236 ratings) — better
Positive reviews33.9% of reviews64.4% of reviews — better
Number of ratings288 — better236
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better15.0
Further details — not scored
Size12 MB86 MB
Age rating4+4+
DeveloperCDV ConceptsEllie's Games, LLC

Customer experience

Moon.

All ratings289 ratings
Positive36.0%
Neutral9.0%
Negative55.0%
Written reviews245 reviews
Positive33.9%
Neutral12.2%
Negative53.9%

Math Duel

All ratings235 ratings
Positive88.1%
Neutral3.4%
Negative8.5%
Written reviews59 reviews
Positive64.4%
Neutral10.2%
Negative25.4%

Bugs and requests

Moon.

Not enough reviews yet to summarise bugs or requests.

Math Duel

Reported bugs

8 issues
  • App keeps crashing
  • Multiplication doesn't work well
  • Division problems cannot be solved due to lack of decimal key
  • Settings button resets score
  • App freezes timer in single player when settings is pressed
Show 3 more
  • Division rounds down, teaching incorrect math
  • Paid app contains ads
  • App keeps cutting off

Requested features

14 requests
  • Ability to focus on specific timestables
  • Option to change operations and differentiation
  • Support for older iPads
  • Return to increments of 1 for numbers
  • Add decimal point for division
Show 9 more
  • Option to give both opponents the same problems
  • Button to go back to menu
  • Button to restart in menu
  • Option for number of questions to win
  • Pause or stop button
  • Online mode
  • Ability to disable sound
  • Round to the tenths place
  • Spinner for difficulty control

In-app purchases

None

Moon.

No in-app purchases

1 purchases

Math Duel

One-time1
  • Unlock All Features$4.99

Questions

Is Moon. free?
Moon. is free to download, with no in-app purchases.
Is Math Duel free?
Math Duel is free to download, with in-app purchases available.
Which has better reviews, Moon. or Math Duel?
Math Duel is rated higher. Moon. averages 2.6 out of 5 from 288 ratings, while Math Duel averages 4.5 from 236 ratings.
Do Moon. or Math Duel have ads?
Neither Moon. nor Math Duel shows ads.
Which is updated more often, Moon. or Math Duel?
Moon. ships an update every 2 months, and Math Duel every 6 weeks. Most recently, Moon. was updated on November 10, 2026 and Math Duel on November 8, 2026.

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