# One Line - 1 Touch Brain Game — One Line brain training test

> Connect all dots with one touch in this challenging brain training puzzle game. (iPhone/iPad app by Trung Bui.)

- Source: https://appshunter.io/ios/app/one-line-1-touch-brain-game/id1548411918 (this page in markdown: same URL + `.md`)
- Developer: [Trung Bui](https://appshunter.io/developer/1150954868)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 3.70/5 from 9 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 55 MB
- Languages: American English
- Released: 2021-01-24
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/one-line-1-touch-brain-game/id1548411918/reviews.md

## What is One Line?

Summary

One Line - One Touch is a simple way to get some brain training exercise everyday. This is a great mind challenging game with simple rules. Just try to connect all the dots with only one touch.

How to play

There is only one rule: Connect all dots with just one touch. It doesn't matter where you start.

There are some complex puzzles or trying to win and overcome them.

Make use of a hint when you get stuck.

Some unique types of line, such as:
 - One way line
 - Overlapping line
 - These special lines will encourage your imagination. 
If you try, you will solve it.


Stages

There are 6 levels, and a total of 300 stages.
At first, it starts off with simple shapes, but each time your level increases, the number of lines increases, and it gets more and more complicated.
You might think it's too easy early on.
However, clearing the simple stages is also important.
The hints to clearing the later, more complicated stages can all be found scattered through the simple stages.

Challenge yourself in this simple and innovative puzzle games! Download 1 Line - One Touch now and enjoy it.

## Key features

- Connect all dots with one touch
- Unique line types
- Hint system
- 300 stages across 6 levels
- Progressive difficulty
- Brain training exercises

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Hint + 20 | $0.99 | one-time |
| Hint + 100 | $3.99 | one-time |
| Hint + 45 | $1.99 | one-time |
| Hint + 70 | $2.99 | one-time |
| Unlock Pakage | $0.99 | one-time |
| Hint + 140 | $4.99 | one-time |



## Frequently asked questions about One Line

### What is the main objective of One Line?

The main objective of One Line is to connect all the dots on the screen using only a single, continuous touch. The game offers 300 stages with increasing complexity to challenge your logic and spatial reasoning skills.

### How many stages are available in One Line?

One Line features a total of 300 stages spread across 6 distinct levels. The difficulty progresses as you advance, introducing more lines and intricate patterns to solve.

### Does One Line offer hints for difficult puzzles?

Yes, One Line provides a hint system to assist players when they get stuck on a particularly challenging puzzle. Hints can be crucial for understanding the logic needed to solve later stages.

### What types of special lines are included in One Line?

One Line includes unique line types such as one-way lines and overlapping lines. These special elements are designed to encourage imagination and add complexity to the puzzles.

### Is One Line suitable for all ages?

One Line has an age rating of 4+, making it suitable for a wide range of players. Its simple rules and progressive difficulty allow younger players to learn while offering a challenge for adults.

### Does One Line have ads?

Yes, One Line contains advertisements. As a free game with in-app purchases, ads are part of the monetization model to support its development and availability.

### Can I play One Line offline?

The provided data does not specify if One Line can be played offline. However, puzzle games of this nature often function without an internet connection, though in-app purchases and ads may require it.

### How often is One Line updated?

One Line was last updated on January 24, 2021, with version 1.0. Based on this information, the update frequency appears to be infrequent, with the initial release being the only listed update.

## Version history (last 1 release)

### 1.0 — 2021-01-24

No release notes.

## Apps similar to One Line

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [1LINE - Draw a line dot to dot](https://appshunter.io/ios/app/1line-draw-a-line-dot-to-dot/id6477733972) | 5.0 (52) | Free | Games |
| [One Line Dots Connect the dots](https://appshunter.io/ios/app/one-line-dots-connect-the-dots/id6474078261) | 4.3 (6) | Free | Games |
| [1LINE one-stroke puzzles](https://appshunter.io/ios/app/1line-one-stroke-puzzles/id1569827269) | 4.7 (278) | Free | Games |
| [One Line: Drawing Puzzle Game](https://appshunter.io/ios/app/one-line-drawing-puzzle-game/id6497230434) | 4.6 (72,146) | Free | Games |
| [Single Line Drawing Puzzle Fun](https://appshunter.io/ios/app/single-line-drawing-puzzle-fun/id6711346177) | 4.4 (789) | Free | Games |
| [One Line Fun - One Line Puzzle](https://appshunter.io/ios/app/one-line-fun-one-line-puzzle/id6443567267) | — | Free | Games |

## More apps by Trung Bui

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- [Junsport](https://appshunter.io/ios/app/junsport/id1635361561)

All apps by Trung Bui: https://appshunter.io/developer/1150954868

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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 2026-08-25.*