# Lettin: Smart Lighting

> Smart lighting control and automation app with extensive color and feature options. (iPhone/iPad app by Chengdu LIGHT&EFFECTS Co.,Ltd..)

- Source: https://appshunter.io/ios/app/lettin-smart-lighting/id1304791276 (this page in markdown: same URL + `.md`)
- Developer: [Chengdu LIGHT&EFFECTS Co.,Ltd.](https://appshunter.io/developer/965099692)
- Category: Lifestyle
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 217 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2018-02-15
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lettin-smart-lighting/id1304791276/reviews.md

## What is Lettin?

What is Lettin?
No matter how you know about Lettin, it’s the right time for you to experience it, the Lettin App is the first key to unlock Lettin magic. Our basic philosophy of creating Lettin is to help our life achieve a more perfect IA (intelligence augmentation) ability. What we create is a tool for you to show your creativity, lifestyle, emotion, and even the tool that improves the efficiency of your mission in the environment.

Lettin System
Firstly, we define the App as a design tool that can manage hundreds of devices, including light sources, sensors, heterogeneous interactive devices, etc. Yes, we have taken a further step in the number of device connections. We firmly believe that the essential of Lettin App is be able to design the space freely and manage it easily.  

Cloud Control: 
You can remotely control Lettin wherever you are, Lettin in your home, your office or even a lamp beside your sofa. (Note: it’s not simple on/off control, but 16 million colors remote control).

-Widget Control
Widget Control feature makes cloud control faster and easier.

Automation:
We have prepared a lot of automation design for you. You can add Lettin smart sensors and wireless switch to enhance the system automation capabilities. You can also use the App automation features to make your life better. 

-Light Timer 
You can manage your biological rhythms with a light timer. For example, wake up yourself in the early morning with a simulated sunrise light, or use the moon light to help you sleep in the evening.

-Geofencing
Geofencing is also one of Lettin's automation feature. With this feature, you will never arrive home in dark. (Turning on this feature will continue to access your location information, which will affect your phone's battery life).

Ambient Lighting 
- 16 Million Colors 
Lettin Chroma warm white and color product line has the widest gamut range among all the smart lighting products in the market. The unique light mixing algorithm makes color transitions natural and smooth.

-Recover the Best Sight in Your Memory
Except for 16 million colors choice, you can also use your favorite photos to simulate the atmosphere. Lettin system algorithm can help you recover the best sight in your memory.

-Human Centric Lighting
Lettin Essential warm and white product line also has a full color temperature to meet the light needs for different periods of time. High quality white light will bring a better experience to your life and study and improve your well-being.

-Work With
AI ready for hands free control. Lettin works with Google Assistant, Amazon Alexa to help you build a connected home.

## Key features

- Remote cloud control
- Widget control
- Automation design
- Light timer
- Geofencing
- 16 million color options
- Human-centric lighting
- Voice control integration

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/lettin-smart-lighting/id1304791276/reviews.md

### 1/5 — Cant sign up

*2022-07-27*

Why

### 5/5 — Good

*2020-08-06*

Nice

## Frequently asked questions about Lettin

### What is Lettin?

Lettin is a smart lighting system designed to augment intelligence in your life. The app serves as the primary tool for managing and controlling your Lettin devices, allowing for creative expression and improved environmental efficiency.

### Can I control Lettin lights remotely?

Yes, Lettin offers cloud control, allowing you to remotely manage your lights from anywhere. This includes not just on/off functionality but also precise control over 16 million colors.

### Does Lettin support automation features?

Yes, Lettin includes robust automation features. You can enhance system automation with smart sensors and wireless switches, or utilize the app's built-in automation to schedule lighting changes, like simulated sunrises or moonlight for sleep.

### What are the lighting color options with Lettin?

Lettin Chroma products offer 16 million colors with a wide gamut range and smooth transitions. You can also use your photos to simulate specific atmospheres, and the Essential line provides full color temperature control for human-centric lighting.

### Does Lettin work with voice assistants?

Yes, Lettin is AI-ready and works with Google Assistant and Amazon Alexa for hands-free control, helping you build a connected home.

### What devices does Lettin support?

The Lettin app is designed to manage hundreds of devices, including light sources, sensors, and heterogeneous interactive devices, allowing for extensive customization of your smart lighting system.

### How accurate is the Lettin rating?

Lettin has a rating of 3.0 stars based on 2 user ratings. This indicates a mixed reception from its current user base.

### When was Lettin last updated?

The latest version of Lettin, 3.3.3, was last updated on December 5, 2019. This suggests a significant gap since its last reported update.

## Version history (last 5 releases)

### 3.3.3 — 2019-12-05

1. Fix the wrong process of Time zone setting for Old Hub
2. Fix the blank display of Time zone for Old Hub
3. Fix the substandard display of city name
4. Modify the UI of selecting city

### 3.3.2 — 2019-11-13

1. New icon for international version
2. Select city to sync Time Zone info
3. More comfortable UI for Widget

### 3.3.1 — 2019-10-19

1. Performance and stability improvements
2. Various bug fixes

### 1.1.0 — 2019-01-09

Lettin HQ and Lebo will be updated to the newest version;Update are as follows:

1.Performance and stability improvements
2.Various bug fixes

### 1.0.6 — 2018-10-24

Optimized user experience.

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

- [Lettin](https://appshunter.io/ios/app/lettin/id1026789303)
- [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.*