# Lettin

> Smart ambient lighting design and management tool for smart homes. (iPhone/iPad app by Chengdu LIGHT&EFFECTS Co.,Ltd..)

- Source: https://appshunter.io/ios/app/lettin/id1026789303 (this page in markdown: same URL + `.md`)
- Developer: [Chengdu LIGHT&EFFECTS Co.,Ltd.](https://appshunter.io/developer/965099692)
- Category: Lifestyle
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 216 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2015-08-18
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lettin/id1026789303/reviews.md

## What is Lettin?

Lettin App是一款强大的智能化氛围照明设计工具，它可以帮助您统一管理与部署数百个照明设备, 传感器设备, 及其它异构交互设备。Lettin的照明设备拥有丰富的色域，独特的混光算法，使得其在动态颜色的变换尤为自然顺滑。
通过Lettin App, 您可以结合不同的场景设计照明氛围, 比如：
-  你可以自定义多种灯光氛围；
-  你可以利用灯光定时唤醒或帮助睡眠；
-  你可以配合传感器，创造各种自动化灯光效果；
-  也可以让Lettin模拟图片中的色彩；
-  还可以通过您的智能音响, 语音控制开关灯或切换氛围.
【温馨提示】
  位置控灯会持续使用GPS定位服务, 切至后台仍会保持GPS连接, 相比其他功能会消耗更多电量

## Key features

- Unified device management
- Rich color gamut and smooth transitions
- Customizable lighting scenes
- Scheduled lighting for wake/sleep
- Sensor-based automation
- Image color simulation
- Voice control integration

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/lettin/id1026789303/reviews.md

### 1/5 — Misleading

*2023-03-17*

Does not connect and does not work

## Frequently asked questions about Lettin

### What can Lettin do?

Lettin is a smart ambient lighting design tool that helps you manage hundreds of lighting and sensor devices. You can customize lighting scenes, schedule wake/sleep lighting, create automated effects with sensors, simulate colors from images, and control lights via voice commands.

### Does Lettin have ads?

No, Lettin does not contain advertisements.

### What devices does Lettin support?

Lettin is available for iPhone and iPod devices.

### How often is Lettin updated?

The latest version of Lettin is 3.3.7, last updated on July 31, 2021.

### What is the age rating for Lettin?

Lettin has an age rating of 4+.

### Can Lettin control lights with voice commands?

Yes, Lettin can integrate with smart speakers to allow voice control for turning lights on/off or switching between lighting atmospheres.

### Does Lettin use GPS, and what is the impact?

Yes, Lettin uses GPS for location-based lighting control. Continuous GPS usage in the background can consume more battery power compared to other features.

### What is the user rating for Lettin?

Lettin has a perfect rating of 5.0 stars based on one review.

## Version history (last 5 releases)

### 3.3.7 — 2021-07-31

1、兼容了新的设备
2、优化了设备图标

### 3.3.6 — 2021-05-28

1、兼容了新的设备
2、优化了设备图标

### 3.3.5 — 2020-09-16

1.优化工作流UI, 并新增”设计场景”功能
2.优化UI细节

### 3.3.3 — 2019-12-05

1. 适配旧版本网关在APP中的时区显示
2. 优化时区选择界面城市列表的名称显示规范
3. 优化时区选择城市界面的布局
4. 优化小组件的UI细节
5. 优化APP部分界面的UI细节

### 3.3.2 — 2019-11-16

1.优化了时区同步逻辑，选择城市即完成时间同步；
2.优化了IOS小组件浅色模式和深色模式显示；
3.加大了IOS小组件底部开关的触控范围性能和UI优化

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## More apps by Chengdu LIGHT&EFFECTS Co.,Ltd.

- [Lettin: Smart Lighting](https://appshunter.io/ios/app/lettin-smart-lighting/id1304791276)
- [Orico](https://appshunter.io/ios/app/orico/id1494845410)
- [Lettin 4.0](https://appshunter.io/ios/app/lettin-40/id1552601141)

All apps by Chengdu LIGHT&EFFECTS Co.,Ltd.: https://appshunter.io/developer/965099692

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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 2026-06-10.*