Sum - Math Puzzle Brain Game
How fast can you add?
About
This game challenges you to find sums from a grid of numbers before time runs out. It offers multiple modes, from fast-paced challenges to relaxed untimed play, and helps improve mental agility and logic skills.
What's New in Sum
2.1
April 8, 2026
Completely redesigned from the ground up. - Brand new dark theme with colorful tile design - Daily Challenge: a new puzzle every day, same for everyone — build your streak - 5 difficulty levels from Kids to Very Hard - Zen mode: no timer, play at your own pace - Hints system with glowing tile reveals - New sound effects and haptics - Animated splash screen - Share your Daily Challenge results with friends - Performance and stability improvements throughout
MoreSubscription plans
Monthly Subscription
Unlock Epic Mode and Remove Ads
Developer apps
FAQ
What is Sum's main gameplay mechanic?
Sum's core gameplay involves a 3x3 grid filled with numbers. Players must find two numbers that add up to a target sum before the time limit expires. Correct sums earn bonus time in Classic mode.
Does Sum offer offline play?
Yes, Sum supports offline mode, allowing you to enjoy the game without an internet connection. This makes it convenient for playing anywhere, anytime.
What are the different game modes in Sum?
Sum features four game modes: Classic (timed with time bonuses/deductions), Rush (purely timed, no bonuses), Infinity (untimed for relaxed play), and Epic (find numbers to form a given sum).
How does Sum help improve my math skills?
Sum is designed as a brain training exercise that stimulates faster thinking and response times. It enhances mental agility and logic through its fast-paced addition challenges.
Can I compete with others in Sum?
Yes, Sum offers the chance to compete with friends and establish mathematical dominance. You can track your progress and performance through detailed statistics.
Does Sum have ads?
Yes, Sum contains advertisements. This is common for free games that offer in-app purchases to support development.
What is the age rating for Sum?
Sum is rated 4+ by the App Store, making it suitable for a wide range of players, including children and adults looking for a fun math challenge.
How often is Sum updated?
The latest version of Sum was released on April 8, 2026, indicating recent updates. The developer, Rajat Vaghani, actively maintains the game.
