Comparison

Math Duel vs Number Line Math K2

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

Head to head
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!

About

Number Line Math K2

This app helps young learners practice addition, subtraction, and comparison skills up to 20 using an interactive number line. Users can customize problems to focus on different unknown quantities and specific math facts.

Highlights
  • Addition and subtraction up to 20
  • More Than/Less Than comparisons
  • Interactive number line tool
  • Customizable unknown quantities
  • Selectable math facts to practice
Features
Read full description

Practice addition and subtraction facts with sums and minuends to 20. Or work with "More Than" and "Less Than" sentences. For example: What number is 5 more than 6? What number is 3 less than 7? Use a number line as a tool for solving the problems. Adjust the options to include any combination of Result, Change, or Start as the unknown quantity. Select the facts to practice.

Screenshots

Math Duel4 screens

Verdict

The call

The clearest difference is rating: Math Duel at 4.5 against Number Line Math K2's 1.0. Math Duel also leads on update cadence (every 6 weeks vs every 12 months) and ratings volume (236 vs 2). Number Line Math K2's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 15.0). On price, ads and monetization model 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. Number Line Math K2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Math Duel holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Math Duel has 236 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Math Duel ships an update every 6 weeks, Number Line Math K2 every 12 months. The most recent releases landed on November 8, 2026 and November 1, 2026 respectively.

Scorecard6 real differences · 4 level
Math Duel versus Number Line Math K2: the parameters behind the verdict, then further details
ParameterMath DuelNumber Line Math K2
PriceFreeFree
Rating4.5 (236 ratings) — better1.0 (2 ratings)
Positive reviews64.4% of reviews—
Number of ratings236 — better2
Update frequencyEvery 6 weeks — betterEvery 12 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.010.0 — better
Further details — not scored
Size86 MB34 MB
Age rating4+4+
DeveloperEllie's Games, LLCClassroom Focused Software

Customer experience

Math Duel

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

Number Line Math K2

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and 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

Number Line Math K2

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Math Duel

One-time1
  • Unlock All Features$4.99
None

Number Line Math K2

No in-app purchases

Questions

Is Math Duel free?
Math Duel is free to download, with in-app purchases available.
Is Number Line Math K2 free?
Number Line Math K2 is free to download, with no in-app purchases.
Which has better reviews, Math Duel or Number Line Math K2?
Math Duel is rated higher. Math Duel averages 4.5 out of 5 from 236 ratings, while Number Line Math K2 averages 1.0 from 2 ratings.
Do Math Duel or Number Line Math K2 have ads?
Neither Math Duel nor Number Line Math K2 shows ads.
Which is updated more often, Math Duel or Number Line Math K2?
Math Duel ships an update every 6 weeks, and Number Line Math K2 every 12 months. Most recently, Math Duel was updated on November 8, 2026 and Number Line Math K2 on November 1, 2026.

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