# Dr.Sum

> Math puzzle game requiring addition to solve number panel arrangements. (iPhone/iPad app by KITERETSU.INC.)

- Source: https://appshunter.io/ios/app/drsum/id1197286886 (this page in markdown: same URL + `.md`)
- Developer: [KITERETSU.INC](https://appshunter.io/developer/400412887)
- Category: Games, Education, Puzzle
- Price: Free with in-app purchases
- Rating: 4.60/5 from 14 App Store ratings · 26 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 163 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2017-04-27
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/drsum/id1197286886/reviews.md

## What is Dr.Sum?

Simple game makes brain teaser!
Clear the games, clear your brain!

Number puzzle from Dr. Sum's new idea!
Basic rules are simple.
Using math addition, re-arrange the panels to the correct orders.
Various gimmick panels on the way!
Work out the sums makes your brain clear.
AND
Who is the smartest?

[Normal Level]
Clear all the 50 levels.

[Time Attack Level]
Let's challenge the puzzles within the target time.

[Endless Level]
This is a level with no end.

## Key features

- Number puzzle gameplay
- Basic addition mechanics
- Panel rearrangement puzzles
- Gimmick panels
- 50 normal levels
- Time Attack mode
- Endless mode

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hint x10 | $0.99 | one-time |
| Hint x50 | $4.99 | one-time |
| Hint x150 | $9.99 | one-time |
| Ads FREE | $2.99 | one-time |


## Recent user reviews (10 of 26)

All indexed reviews: https://appshunter.io/ios/app/drsum/id1197286886/reviews.md

### 4/5 — Fun game

*2024-11-29*

It

### 1/5 — Boring

*2020-11-23*

This is boring like school! I hate it

### 2/5 — A bit confused

*2020-05-24, version 1.1.0*

According to this game 1*3+4=9?? It was good for the first 12 levels but then they forgot how to do maths.

### 5/5 — Relaxing brain food!

*2019-02-18, version 1.1.0*

Great little game! Immersive puzzles that get your brain ticking, in a way it isn’t often used in this age of calculators being at our fingertips!
Relaxing in a way as you are just simply focussed on the puzzles, good for a busy mind 😊

### 5/5 — Complain

*2018-10-18, version 1.1.0*

A lot of adds

### 5/5 — Good “brain food” game

*2018-10-07, version 1.1.0*

Excellent game!! Great MENTAL ARITHMETIC. Takes me back to my school days (I’m not that old lol) when calculators ect weren’t allowed to be used!!
Great for most ages to get those brain cells working!!

### 5/5 — simple yet addicting

*2017-11-20*

🆒 the ads are annoying, other than a simple and fun math game 🆒

### 5/5 — Simple and fun

*2017-10-06, version 1.1.0*

This game is super simple. Love the concept. I hope there will be 3x3 matrices. Also love the art. Super cute design.

### 5/5 — Fantastic

*2017-07-31, version 1.1.0*

Is basically fun maths.

### 5/5 — Dr sum

*2017-06-27, version 1.1.0*

It's fantastic I personally have improved so much in maths and it's great.😍😍😍I LOVE IT 😍😍😍

## Frequently asked questions about Dr.Sum

### What is Dr.Sum?

Dr.Sum is a number puzzle game that challenges players to use basic addition to solve problems. The core gameplay involves rearranging panels to achieve the correct sums. It's designed to be a brain teaser that helps clear your mind.

### What are the different game modes available?

The game offers three distinct modes: Normal Level, where you clear 50 pre-designed stages; Time Attack Level, which challenges you to solve puzzles within a target time; and Endless Level, a mode with no predetermined end for continuous play.

### How does the game monetize?

The application is free to download and play, but it does offer in-app purchases. This means you can enjoy the core game for free, with optional purchases available for additional content or features.

### What kind of puzzles can I expect?

The puzzles are based on simple math addition. You'll need to re-arrange number panels into the correct order to make the sums work. The game also introduces various 'gimmick panels' that add complexity and challenge to the puzzles.

## Version history (last 2 releases)

### 1.1.0 — 2017-05-02

This app has been updated by Apple to display the Apple Watch app icon.

- Simplified Chinese, Traditional Chinese and Korean now supported.

### 1.0.0 — 2017-04-27

No release notes.

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## More apps by KITERETSU.INC

- [ZOOKEEPER DX](https://appshunter.io/ios/app/zookeeper-dx/id433596395)
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- [Z Rush](https://appshunter.io/ios/app/z-rush/id1481546998)

All apps by KITERETSU.INC: https://appshunter.io/developer/400412887

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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 2026-06-10.*