# Logic Trace — Colorful Dot Line

> Colorful Dot Line (iPhone/iPad app by 德军 朱.)

- Source: https://appshunter.io/ios/app/logic-trace/id1474638058 (this page in markdown: same URL + `.md`)
- Developer: [德军 朱](https://appshunter.io/developer/635191375)
- Category: Games, Entertainment, Trivia, Word
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 9.0 · 83 MB
- Languages: English
- Released: 2019-09-05
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/logic-trace/id1474638058/reviews.md

## What is Logic Trace?

Logic Trace  is a very interesting number connect puzzle game.

If you're a fan of Sudoku and Dots,  Logic Trace is a new game worth trying out.

■□ Game Rules □■

1. Drawing lines horizontally or vertically from the cell of known numbers in the grid, which can extend horizontally or vertically. The count of the cells which lines covered should be the same as the value of the known number.

2. The drawn line cannot enter the cell of a known number, nor can it occupy the same cell as the other lines.

3. The game wins when all the blank cells in the grid are covered by a certain line.

■□ Game Features □■

1. Rules are simple, no limit of step or time, just enjoy.

2. Level packs of different difficulties, from entry to mastery, everyone can enjoy the fun of the game. 

3. 400+ puzzles, more puzzles will come as updates.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Expert Levels | Free | one-time |
| Master Levels | $3.99 | one-time |
| Generosity | $4.99 | one-time |



## Version history (last 5 releases)

### 1.3 — 2020-03-03

- 100 new levels.
- Expert levels is FREE !

### 1.2 — 2020-02-15

- 50 new levels for each difficulty, a total of 200 new levels!
- Optimize the startup speed。

### 1.1 — 2020-01-29

-- 100+ new levels , enjoy
-- improve the performance and stability

### 1.01 — 2019-09-16

1. 60 new levels.
2. Fix bugs.

### 1.0 — 2019-09-05

No release notes.

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## More apps by 德军 朱

- [24 - Classical Math Game](https://appshunter.io/ios/app/24-classical-math-game/id1179324986)
- [24 - Mental Math Game](https://appshunter.io/ios/app/24-mental-math-game/id1442241529)
- [Final Odyssey](https://appshunter.io/ios/app/final-odyssey/id1454671330)
- [PL Detector](https://appshunter.io/ios/app/pl-detector/id1474958780)
- [Mini Aquarium - Fish Tank](https://appshunter.io/ios/app/mini-aquarium-fish-tank/id1497094068)

All apps by 德军 朱: https://appshunter.io/developer/635191375

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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 2026-05-19.*