# Focus Line — Line Art Colorization

> One-click line art generation and image enhancement app. (iPhone/iPad app by 鑫鑫 陈.)

- Source: https://appshunter.io/ios/app/focus-line/id6447179702 (this page in markdown: same URL + `.md`)
- Developer: [鑫鑫 陈](https://appshunter.io/developer/1680459299)
- Category: Graphics & Design, Photo & Video
- Price: $0.29
- Rating: 5.00/5 from 2 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 22 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2023-04-12
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/focus-line/id6447179702/reviews.md

## What is Focus Line?

No ads.  No network required. Private.
【One click generation of line draft】
Fast speed, supporting various styles of image line draft generation
【Super Resolution Support】
Blur the image to make it clearer
【Support multiple export methods】
Support for adjusting the accuracy level of online drafts
Support for exporting transparent line drafts
Support for exporting 4k high-resolution line drafts and full size line drafts

## Key features

- One-click line art generation
- Multiple line art styles
- Image super resolution
- Adjustable line draft accuracy
- Transparent line draft export
- 4K high-resolution export

## Chart rankings

- #21 in Top Paid · Graphics & Design (US App Store)

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/focus-line/id6447179702/reviews.md

### 4/5 — Médio com bônus

*2025-09-26*

O aplicativo atende bem às expectativas de transformar um desenho colorido em um desenho para colorir. Porém não gera resultados satisfatórios usando foto (na média, igualmente ruim se comparado a outros da categoria). Porém existem funções extra que valem muito a aquisição e a minha preferida é a pixelização da imagem, que é o método mais eficiente de entregar amostra quando você comercializa imagens. Minha dica é oferecer um produto com o mesmo número de páginas que o produto comercializado, mas a amostra teria a capa e a primeira imagem normais, com todas as demais pixelizadas, pois isso dá uma ideia do que o cliente vai estar adquirindo, despertando curiosidade e interesse sem entregar o seu trabalho de graça (resolução baixa ou marca dágua não éproteção suficiete quando se trata de registro em imagem).

### 5/5 — 非常好，不知道有没有安卓版，我也想弄一个。

*2025-04-19*

非常好，不知道有没有安卓版，我也想弄一个。

### 4/5 — ，

*2025-02-09*

抠图成线稿很好，就是自动上色很鸡肋，就是线稿加个暖色滤镜啊。。。

### 5/5 — 超级赞

*2024-08-05*

超级赞，第一良心！现在很够用了！

**Developer response:** 感谢您的支持

### 5/5 — 有安卓版本吗

*2024-06-06*

有安卓版本吗

**Developer response:** 抱歉  目前没有安卓版本 感谢支持

### 5/5 — 真的很好

*2024-05-17*

真的很完美，感觉细节可以再完善一下就更完美了

**Developer response:** 感谢您的支持 细节优化可以在评论中说明 或者反馈至illusoryorder@outlook.com

### 5/5 — 好评

*2023-09-15*

非常好用，很方便

**Developer response:** 感谢您的支持

### 1/5 — 下载了不能用

*2023-09-15*

一直打不开

**Developer response:** 十分抱歉 1.2.1版本有崩溃的问题 我们在半天内已更新了1.2.2版本 请下载安装1.2.2版本 如还有疑问 请联系illusoryorder@outlook.com 或者在个人账号后台申请退款 感谢您的反馈

## Frequently asked questions about Focus Line

### What is Focus Line?

Focus Line is a graphics and design application that allows users to generate line art from their photos with a single click. It also offers features to enhance image clarity and supports various export options.

### How much does Focus Line cost?

Focus Line is available for a one-time purchase of $0.29. This price provides full access to all its features without any recurring fees.

### Does Focus Line have ads?

No, Focus Line is completely ad-free. The app description explicitly states 'No ads,' ensuring an uninterrupted user experience.

### Can I use Focus Line offline?

Yes, Focus Line does not require a network connection to operate. The app is designed to be private and fully functional offline.

### What devices does Focus Line support?

Focus Line is compatible with iPhone, iPad, and iPod devices. It is designed for the iOS ecosystem.

### What is the age rating for Focus Line?

Focus Line has an age rating of 4+, making it suitable for a wide range of users, including younger individuals.

### How often is Focus Line updated?

Focus Line was last updated on December 2, 2025, with version 1.3.1. This indicates active development and support for the application.

### What export options are available in Focus Line?

Focus Line supports multiple export methods, including exporting transparent line drafts and 4K high-resolution or full-size line drafts. Users can also adjust the accuracy level of the generated line drafts.

## Version history (last 5 releases)

### 1.3.1 — 2025-12-02

Fixed the issue where the album could not be opened on ios18 and above
Remove the coloring function

### 1.3 — 2023-12-09

New line draft extraction algorithm
(Switch to the new version algorithm by default. If you need an old version algorithm, please modify it in the settings.)
Add sketch generation

### 1.2.3 — 2023-10-19

Add image preview mode

### 1.2.2 — 2023-09-15

fix crash

### 1.2.1 — 2023-09-14

Optimize pencil drawing
Add Pixel Painting

## Apps similar to Focus Line

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Easy Sketch - Line Art](https://appshunter.io/ios/app/easy-sketch-line-art/id6447545075) | 2.6 (5) | $0.99 | Graphics & Design |
| [Quick Draw: AR Tracing](https://appshunter.io/ios/app/quick-draw-ar-tracing/id6747405708) | 4.0 (12) | $0.99 | Graphics & Design |
| [Relax For A Minute](https://appshunter.io/ios/app/relax-for-a-minute/id1543821598) | 4.2 (10) | $0.99 | Graphics & Design |
| [Fai: Free AI Meme Generator](https://appshunter.io/ios/app/fai-free-ai-meme-generator/id6740988030) | 5.0 (3) | $0.99 | Graphics & Design |
| [GradientWallpaper](https://appshunter.io/ios/app/gradientwallpaper/id731511368) | 5.0 (1) | $0.49 | Graphics & Design |
| [Crystalzoa](https://appshunter.io/ios/app/crystalzoa/id6444454988) | 5.0 (4) | $0.29 | Graphics & Design |

## More apps by 鑫鑫 陈

- [优作+](https://appshunter.io/ios/app/plus/id6465684086)
- [Focus Farbe](https://appshunter.io/ios/app/focus-farbe/id6468962071)
- [InkTracer](https://appshunter.io/ios/app/inktracer/id6756664467)

All apps by 鑫鑫 陈: https://appshunter.io/developer/1680459299

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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 2026-08-24.*