App review by
Dana Anderson, Common Sense Media
Mathris App Poster Image
Arcade-style addition practice for kids who like fast games.

Parents say

age 10+
Based on 1 review

Kids say

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A lot or a little?

The parents' guide to what's in this app.

Educational Value

Kids can practice their addition skills by choosing different combinations of two addends that add up to a number requested by the game. Because Mathris is a work-against-time game, kids must practice working efficiently and handling the stress of the balls piling up as they are choosing and tapping balls that match. Mathris could become more effective for more kids if it included slower modes of play for kids who aren't ready for the level of speed at which it currently progresses. Still, this is a fun app that offers good practice in quick-thinking addition.

Ease of Play

Very easy to play. Simply look at the number you need to match and tap the balls with numbers on them that add up to that first number. It would be nice if there were a setting for younger kids to slow down the dropping balls or limit the range of numbers used.


After you play a few levels, it costs $.99 to unlock higher levels.

Drinking, Drugs & Smoking

What parents need to know

Parents need to know that Mathris is a fun, arcade-style game kids can play to practice rapid-fire addition. Players tap on falling balls that add up to a target number in order to rack up enough points to move onto the next level before the screen fills up with balls. Mathris is OpenFeint enabled, but players don't have to participate in OpenFeint to play the game, and Common Sense Media doesn't recommend kids or tweens use OpenFeint without adult supervision (see Privacy & Safety concerns). Higher levels of play require an in-app purchase of $.99.

User Reviews

  • Parents say
  • Kids say
Adult Written byGamer4056 August 15, 2018

Mathris Parent Guide

Cool and fun. In-app digital purchases available.

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What's it about?

Numbered balls drop onto the screen, filling it up quickly, as kids try to tap the balls with the numbers on them that add up to the target number. Tap balls with the numbers 4 and 6 to equal 10; then tap 5 and 5. If you can't find another number to equal the target number, just untap the ball you've already picked and restart. Keep going until the screen fills up or you win and move up a level.

Is it any good?

Mathris can be the sort of high speed, in-the-zone, arcade-style fun that makes some kids forget they're actually practicing math. For other kids, though, it could be more frustrating than fun when the balls just keep coming, filling the screen full of more balls and more numbers, while they're still trying to figure out which ones combine to make the target number. It would be nice if the game had an "easy" or "slow" mode to adjust play for kids who aren't ready for that much rapid-fire addition. That said, this is a perfect game for kids who like speed and need addition practice.

Talk to your kids about ...

  • Brush up on your addition speed and play the game with your kid.

  • If kids get frustrated by the pace of the game, suggest they take a break from the app and practice at their own pace. Apps like Sums Stacker offer timer-free options.

App details

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