# Just a Line: One Line Puzzle — Draw Shapes in One Stroke

> Classic one-line drawing puzzle game to train your brain. (iPhone/iPad app by Thang Vu.)

- Source: https://appshunter.io/ios/app/just-a-line-one-line-puzzle/id1316876503 (this page in markdown: same URL + `.md`)
- Developer: [Thang Vu](https://appshunter.io/developer/1269408753)
- Category: Games, Education, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 4.00/5 from 48 App Store ratings · 34 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 89 MB
- Languages: American English, French (France), Japanese, Korean, Vietnamese
- Released: 2017-12-11
- Data updated: 2026-10-14
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/just-a-line-one-line-puzzle/id1316876503/reviews.md

## What is Just a Line?

Draw the whole shape in one line — without lifting your finger and without tracing any line twice.

Just a Line is a classic one-line drawing puzzle. The rules take seconds to learn, but every level hides one path that covers every line, and finding it is the fun part. Start with simple triangles and work up to tangled shapes that will make you stop and think. [N]+ levels and counting.

WHO IT'S FOR
- Anyone who wants a quick brain teaser for a coffee break
- Fans of one-stroke, no-lift, single-line puzzle games
- Players who like a satisfying, low-pressure challenge

KEY FEATURES
- Simple, relaxing one-touch controls
- [N]+ levels that grow from easy warm-ups to real brain-benders
- Two modes: Normal Mode to play at your own pace, and Master Mode against the clock
- Stuck on a shape? Tap for a hint
- Earn up to 3 stars on every level
- Train logic, focus and spatial thinking in short sessions
- Available in English, Japanese and Korean

HOW TO PLAY
1. Tap a dot to start.
2. Swipe along a line to connect it to the next dot.
3. Cover every line to complete the shape.
4. You can't draw over the same line twice — plan your route!

Perfect for a quick coffee break or winding down before bed. How many shapes can you draw with just one line?

Questions or feedback? Reach us any time through the App Store support link.

## Key features

- Draw shapes without lifting finger
- No retracing lines
- Numerous challenging levels
- Improves memory and concentration
- Enhances logical thinking

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |
| 10 stars | $0.99 | one-time |
| 20 stars | $1.99 | one-time |
| 100 stars | $3.99 | one-time |
| 500 stars | $7.99 | one-time |
| 1000 stars | $15.99 | one-time |
| 5000 stars | $29.99 | one-time |


## Is Just a Line safe?

Just a Line: One Line Puzzle appears mostly safe based on user ratings. The AppsHunter Safety Score for Just a Line is 77 out of 100. This assessment is based on 48 user ratings, with an App Store average of 4 out of 5. Of 48 App Store ratings, 75.0% point to a safe experience, 8.3% suggest some concerns, and 16.7% point to a risky experience.

## Is Just a Line legit?

Just a Line: One Line Puzzle appears to be a legitimate app. The AppsHunter Legitimacy Score for Just a Line is 90 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (10 of 34)

All indexed reviews: https://appshunter.io/ios/app/just-a-line-one-line-puzzle/id1316876503/reviews.md

### 4/5 — It has potential

*2022-07-07, version 1.0.5*

I enjoy this game, however there are two areas to improve on. 1) Some puzzles do not fit the screen. 2) Game freezes (the timer continues to run even when it’s frozen). Game has potential, it just needs to address and fix the issues.

### 1/5 — Too easy, does not adjust to screen size.

*2021-12-07, version 1.0.5*

I have an iPhone 13 Pro and the sides and this game does not fit the screen resolution. The sides are cut off which makes some points impossible to get to since they are offscreen.

The game is also ridiculously easy for anyone who took higher level math.

SPOILER: STOP READING IF YOU WANT TO FIGURE OUT THE PUZZLES FOR YOURSELF.

Just start with any point that has an odd number of lines coming out and end on the other point with odd lines coming out. There are only 2 or else the puzzle is unsolvable.

### 1/5 — stupid game

*2021-10-29, version 1.0.5*

THERES NO WAY TO REACH LEVEL 4

### 3/5 — Problem level 4

*2020-08-07, version 1.0.5*

It’s a fun app, but it is impossible to get passed the forth level on master mode, even with the instructions you can to it.

### 1/5 — Mediocre

*2020-02-18, version 1.0.5*

This app is developed by by a mediocre person:(!!!!

### 5/5 — Super

*2019-06-25, version 1.0.5*

Une bonne application qui fait travailler la logique.

### 4/5 — Like the game

*2019-04-23, version 1.0.5*

I like the game. It’s gets harder as you progress and you need to think. I like the music too. Two things. Ads are too frequent, every 2levels or so. Plus you go back to the main menu and must press multiple keys to get back to where you were.

### 4/5 — This is incredible

*2019-03-27, version 1.0.5*

Very good puzzle with each level it gets harder and harder and more fun

### 5/5 — Good qulity

*2019-02-17, version 1.0.5*

Work is better then other app and also i am entertained

### 4/5 — Simple but effective puzzler

*2018-10-01, version 1.0.5*

Good for a quick puzzle fix on the tram or waiting in line.

## Frequently asked questions about Just a Line

### What is Just a Line - 1 Line Drawing?

This is a classic one-line drawing puzzle game. The objective is to draw a given shape or contour without lifting your finger from the screen and without retracing any lines.

### What are the key features of this game?

Key features include drawing shapes without lifting your finger, a no-retrace line rule, numerous increasingly difficult levels, and benefits for memory, concentration, and logical thinking.

### How do I play Just a Line?

You play by tapping on a point and then swiping along the lines to connect to other points. Repeat this process until all points are connected and the desired shape is formed, ensuring no line is used more than once.

### Is this game free to play?

Yes, the game is free to play. However, it does offer in-app purchases, which may provide additional content or features.

### What are the benefits of playing this game?

Playing this game can help improve your memory, concentration, decision-making skills, and logical thinking abilities. It offers a fun and challenging way to exercise your brain.

## Version history (last 3 releases)

### 1.1.1 — 2026-10-01

• Now available in Vietnamese and French
• Fixed Game Center leaderboards not opening
• Stars and cleared levels are now counted correctly on the leaderboards

### 1.1 — 2026-09-29

• Now available in Japanese and Korean
• Full-screen layout on iPhones with a notch or Dynamic Island
• Performance and stability improvements

### 1.0.5 — 2017-12-11

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

## Apps similar to Just a Line

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [One Line Fun - One Line Puzzle](https://appshunter.io/ios/app/one-line-fun-one-line-puzzle/id6443567267) | — | Free | Games |
| [One Line Draw Logic Game](https://appshunter.io/ios/app/one-line-draw-logic-game/id6746066497) | — | Free | Games |
| [Draw One Line -- connect dots](https://appshunter.io/ios/app/draw-one-line-connect-dots/id1108795099) | 5.0 (4) | Free | Games |
| [One Line One Touch Draw Puzzle](https://appshunter.io/ios/app/one-line-one-touch-draw-puzzle/id6739804728) | 4.8 (23) | Free | Games |
| [Hitofude One Line](https://appshunter.io/ios/app/hitofude-one-line/id1505157420) | 5.0 (1) | Free | Games |
| [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 |

## More apps by Thang Vu

- [Maze Escape - The Hardest](https://appshunter.io/ios/app/maze-escape-the-hardest/id1271675801)
- [Mahjong Solitare - Shanghai Deluxe](https://appshunter.io/ios/app/mahjong-solitare-shanghai-deluxe/id1273582965)
- [Milestone - Number Power](https://appshunter.io/ios/app/milestone-number-power/id1333548360)
- [Number 10 - Ten Blocks](https://appshunter.io/ios/app/number-10-ten-blocks/id1343238159)
- [Balls vs Emoji: Idle Clicker](https://appshunter.io/ios/app/balls-vs-emoji-idle-clicker/id1366977943)

All apps by Thang Vu: https://appshunter.io/developer/1269408753

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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 2026-10-14.*