# SEN - line drawing game -

> Draw one line to solve math equation puzzles. (iPhone/iPad app by Masanori Yamamoto.)

- Source: https://appshunter.io/ios/app/sen-line-drawing-game/id1151631944 (this page in markdown: same URL + `.md`)
- Developer: [Masanori Yamamoto](https://appshunter.io/developer/523579705)
- Category: Games, Entertainment, Puzzle
- Price: Free with in-app purchases
- Rating: 4.30/5 from 4 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 14 MB
- Languages: American English, Japanese
- Released: 2016-11-09
- Data updated: 2026-06-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sen-line-drawing-game/id1151631944/reviews.md

## What is SEN?

Draw 1 line to transform this into a correct equation.

## Key features

- Draw one line to solve
- Equation transformation
- Logic puzzles
- Brain teaser
- Math challenges

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ad | $0.99 | one-time |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/sen-line-drawing-game/id1151631944/reviews.md

### 4/5 — くるしい

*2023-12-10, version 1.01*

2に\で8とか強引なのばっかw
20問しかないけど楽しめた

### 5/5 — Fun math game

*2023-09-11*

Hard but fun

### 4/5 — 一つ線を引くだけ

*2022-07-31, version 1.01*

馬鹿馬鹿しくて笑える

### 1/5 — 残念

*2021-03-20, version 1.01*

-13と3.4が＝になる意味がわからない

### 5/5 — 良い！

*2017-07-11, version 1.01*

ほどよく難しくてとってもとっても面白かった！！

### 5/5 — ユニークな解法にイラつくも納得

*2017-02-11, version 1.01*

「こんなのありかよ！」と叫ぶこと多々。しかし決して解けなくはない。やってみるべし！

### 1/5 — 面白いから続けたいのに

*2017-01-25, version 1.01*

ヒントに行くと落ちまくり…ヒントは見るなという事か？
ゲーム自体は面白いのに残念！

### 2/5 — ???

*2016-12-24*

Very mathy.

### 3/5 — まあまあ

*2016-11-15, version 1.01*

かなり無理矢理なとこあったけど、まずまず楽しめた！（ステージ数少ないけど）

## Frequently asked questions about SEN

### What is SEN - line drawing game -?

SEN - line drawing game - is a free puzzle game where players draw a single line to correct mathematical equations. It's designed to test logic and problem-solving skills.

### How do you play SEN - line drawing game -?

The objective is to draw one line to make the given mathematical equation true. For example, you might need to move a line to change a '+' to a '-' or alter a number.

### Is SEN - line drawing game - free to play?

Yes, the game is free to download and play. It also offers in-app purchases for additional content or features.

### What devices does SEN - line drawing game - support?

SEN - line drawing game - is available on iPhone, iPad, and iPod touch devices.

### What is the age rating for SEN - line drawing game -?

The game has an age rating of 4+, making it suitable for young children and adults alike.

### How often is SEN - line drawing game - updated?

The game was last updated on November 11, 2016, with version 1.01. It has not received updates since then.

### Does SEN - line drawing game - have ads?

No, the game does not contain advertisements.

### What is the user sentiment for SEN - line drawing game -?

Based on 4 ratings, the game has an average rating of 4.3 stars, indicating positive user sentiment.

## Version history (last 2 releases)

### 1.01 — 2016-11-11

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

Fixing problems

### 1.00 — 2016-11-09

No release notes.

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## More apps by Masanori Yamamoto

- [SMALL ROOM - escape game -](https://appshunter.io/ios/app/small-room-escape-game/id523579702)
- [3 DOORS ESCAPE - escape game -](https://appshunter.io/ios/app/3-doors-escape-escape-game/id554615032)
- [KURUMA - room escape game -](https://appshunter.io/ios/app/kuruma-room-escape-game/id557106228)
- [3 SMALL KEYS - escape game -](https://appshunter.io/ios/app/3-small-keys-escape-game/id564475020)
- [WHITE ROOM - escape game -](https://appshunter.io/ios/app/white-room-escape-game/id568026176)
- [SUNKEN ROOM - escape game -](https://appshunter.io/ios/app/sunken-room-escape-game/id583295935)

All apps by Masanori Yamamoto: https://appshunter.io/developer/523579705

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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 2026-06-04.*