# SumSum: Mental Math Training — Train your mental arithmetic!

> Brain game for mental arithmetic training with number combination challenges. (iPhone/iPad app by arc GAME STUDIO Inc..)

- Source: https://appshunter.io/ios/app/sumsum-mental-math-training/id1601915333 (this page in markdown: same URL + `.md`)
- Developer: [arc GAME STUDIO Inc.](https://appshunter.io/developer/1466058038)
- Category: Games, Education, Casual, Family
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 262 MB
- Languages: English, Japanese, Korean, Chinese, Chinese
- Released: 2022-02-21
- Data updated: 2026-06-13
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sumsum-mental-math-training/id1601915333/reviews.md

## What is SumSum?

SumSum is a brain game that allows training mental arithmetic in an easy and fun way.
It's a seemingly simple addition game, but it won't be easy to score high.

You start as an amoeba with an IQ of 1 and gradually evolve.
Combine as many numbers as possible to make the suggested number and become the king of mental arithmetic!

SumSum is a free game suitable for every age group from school kids to adults and seniors.
Download this app for now and boost up your IQ!

Features of SumSum Game
• Enjoy 3 difficulty levels, consisting of 4X4, 5X5, 6X6 number blocks.
• Combine multiple numbers to create high combos to get more points.
• Complete daily challenges and collect trophies.
• Simple to play, but requires strategy and agility to score high.
• Starts with IQ 1 and continues to evolve.
• Compete for the highest score with number kings around the world.
• Enjoy SumSum for free when you're bored or just want to train your brain with addictive gameplay.
• The game is available offline.

SumSum Effects
• It keeps your brain clear with mental arithmetic.
• Improves your memory.
• It develops your concentration.

How to become the number king of SumSum?
• Combine as many numbers as possible to make the suggested number.
• Get a high score and get more experience to evolve faster.
• Use boosters to overcome crisis moments.

SumSum is a game that requires mental arithmetic and concentration, but it is easy and fun, so you can play it without any burden.
There is no limit on the number of plays, so you can play anytime, anywhere.

Is mental arithmetic hard? Don't make it hard. By playing SumSum, you can improve your mental arithmetic skills in an easy and fun way.
Do you like number games? If so, I highly recommend it.

## Key features

- Mental arithmetic training
- Number combination gameplay
- Character evolution system
- Daily challenges and trophies
- Global high score competition
- Offline play

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |



## Frequently asked questions about SumSum

### What is SumSum?

SumSum is a brain game designed to make mental arithmetic training easy and fun. It involves combining numbers to reach target sums, with a progression system that starts players as an amoeba and allows them to evolve.

### How do I play SumSum?

You play SumSum by combining numbers on the screen to match a suggested target number. The more numbers you combine effectively, the higher your score and the faster you can evolve. The game offers three difficulty levels with different grid sizes.

### Is SumSum suitable for all ages?

Yes, SumSum is a free game suitable for every age group, from school kids to adults and seniors. Its intuitive gameplay makes it accessible while still offering strategic depth.

### Can I play SumSum offline?

Yes, the game is available offline, allowing you to train your brain and enjoy addictive gameplay anytime, anywhere without needing an internet connection.

### Does SumSum have ads?

Yes, SumSum contains advertisements. It is a free game that also offers in-app purchases.

### How often is SumSum updated?

The latest version of SumSum is 1.0.8, which was last updated on May 7, 2022. Updates typically focus on improving gameplay and adding new features.

### What are the benefits of playing SumSum?

Playing SumSum can help keep your brain clear with mental arithmetic, improve your memory, and develop your concentration. It's a fun way to boost your IQ and cognitive skills.

### How does SumSum compare to other math games?

SumSum focuses on a unique evolution mechanic tied to mental arithmetic performance, offering a blend of strategy and quick calculation. It also provides daily challenges and global leaderboards for competitive play.

## Version history (last 3 releases)

### 1.0.8 — 2022-05-07

[Version 1.0.8]
- Adjusted the balance.
- Added logout function.
- Bug fixes and stability improvements.

### 1.0.7 — 2022-03-18

[Version 1.0.7]
- Added daily rewards.
- Adjusted the balance and direction.
- Bug fixes and stability improvements

### 1.0.1 — 2022-02-22

No release notes.

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## More apps by arc GAME STUDIO Inc.

- [Zombie Sweeper: Action Puzzle](https://appshunter.io/ios/app/zombie-sweeper-action-puzzle/id1466058039)
- [Smash King: Fist of Fury](https://appshunter.io/ios/app/smash-king-fist-of-fury/id1632813382)

All apps by arc GAME STUDIO Inc.: https://appshunter.io/developer/1466058038

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-13.*