Sum - Math Challenge

8.3 34

v4.0.1 by Free VPN LLC

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Editor's Review

Addition is one of the simplest and earliest mathematical tricks taught. Everyone ends up adding two numbers every day for some reason or the other.

About Sum

Sum (Package Name: cybersky.sum) is developed by Free VPN LLC and the latest version of Sum - Math Challenge 4.0.1 was updated on March 20, 2019. Sum - Math Challenge is in the category of Puzzle with the feature Puzzle Games. You can check all apps from the developer of Sum - Math Challenge and find 41 alternative apps to Sum - Math Challenge on Android. Currently this app is for free. This app can be downloaded on Android 4.2+ on APKFab or Google Play. All APK/XAPK files on are original and 100% safe with fast download.
Is there anything more basic than adding 2 numbers together? How hard can it be?
Well...if you've got so much experience, let's see how good you are!
So you think you can add? Take the challenge and find out!
The game is very straightforward and simple...and highly addictive -
The game consists of a 3x3 grid. 5 numbers are generated at random, in random places on that grid.
There are 4 different game modes to choose from:
★ Classic: You get 90 seconds to find as many combinations as possible. Scoring a correct combination gives you 3 seconds more, whereas a wrong combination will deduct 5 seconds from your remaining time.
★ Rush: Score as many combinations as you can in 90 seconds. No time bonuses or deductions.
★ Infinity: Play and practice for as long as you want without any time restrictions.
★ Epic: Take the challenge (if you dare): in Epic mode, the sum is given to you before hand, and you have to use as many tokens as possible from the grid to form it. Same time rules apply here! Score higher by using more tokens to form the sum.
To make a combination, you have to select the "SUM" first, followed by the two numbers that add up to the sum.
Correct combination: 20 = 8 + 12 OR 20 = 12 + 8
Wrong combination: 8 + 12 = 20 OR 12 + 8 = 20
Each time you pass a level, you get a bonus 30 seconds of more time.
Time bonus: Can only be secured in the "Classic mode" by one of the following ways:-
- Game duration > 300s = +1000 points.
- Game duration > 420s = +2000 points.
- Game duration > 500s = +3000 points.
Other important features:
☆ Different game modes.
☆ Various levels of difficulty.
☆ Compete with friends!
☆ Play offline: no internet connection required to play.
☆ Small size.
☆ Sleek and nice looking UI.
☆ Statistics to see how you're doing.
☆ The most challenging - and addictive - math game in the Play Store!
Note: Not only are these kind of games fun, but scientifically proven helpful to train your brain and make it think and respond faster. Enjoy!
See what the App Review sites have been saying about Sum - Math Challenge:
"Simple Math Puzzles Turned Engrossingly Fun"
Talk Android
"What is even more impressive is the game features no ads and no permissions. I don’t see any reasons not to give this one a shot."
Listed on Product Hunt

Sum 4.0.1 Update

*Huge* update:
- Improvements across the board
- UI Changes
- Few tiny bugs squashed
- Added support for latest Android OS'
Read More
Sum Features
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Previous Versions More
Sum - Math Challenge
Sum - Math Challenge 4.0.1 APK
June 8, 2019 6.28 MB

Requires Android: Android 4.2+

Screen DPI: nodpi

SHA1: eb27e4ccb07d3d185decec907118f5637ec3ec49

Size: 6.28 MB

What's New:

*Huge* update:
- Improvements across the board
- UI Changes
- Few tiny bugs squashed
- Added support for latest Android OS'
Sum - Math Challenge
Sum - Math Challenge 3.2 APK
September 2, 2015 2.77 MB

Requires Android: Android 3.0+

Screen DPI: 160-640dpi

SHA1: b4fc2c6519d6ee03bae1658e74156109a4891ae8

Size: 2.77 MB

What's New:

Everyone loves UI changes! And we've got a big one (which we hope you like). Everything else remains the same.

Any and all feedback would really be appreciated! Thank you for all the love and support, keep adding! ;)

Sum - Math Challenge
Sum - Math Challenge 3 APK
July 22, 2015 2.7 MB

Requires Android: Android 3.0+

Screen DPI: 160-640dpi

SHA1: 63f6d9501b138fb88fdfdf683ec6fb4c5a554acf

Size: 2.7 MB

What's New:

To celebrate reaching the 10,000 mark we've got another *huge*

★ New game mode - EPIC Mode!
Use as many tokens as you can to form the sum that is already
below the grid. Follow the in-game instructions to
know more.

★ Leaderboard for all modes - Competition has increased with individual leaderboards for Classic, Rush and Epic modes.

★ Clear statistics - Start afresh, set everything to 0.

★ UI Changes

★ Find us on Facebook -

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Available on:

Google Play


Android 4.2+