IMPORTANT NOTICE: Server will be shutting down permanently on March 01, 2022

Welcome to TWatch Builder

Thank you for coming to our platform that allows you to implement new apps and watch faces for the amazing LILYGO T-WATCH-2020 smartwatch with little effort. If you don't have one, just click and buy yours from our AliExpress store.

Compatible with V1 version. The V2 and V3 versions are not supported until new notice. Please be sure which version you have

To get started, simply press the button below

Open TWatch Builder web IDE

Customize your watch

We develop several watches and apps to customize your T-WATCH-2020.

Simply search for apps at the Store and then add it to your collection. There are digital and analog watchfaces - with time, date, battery level and stepcounter - and applications.

Finally, download your new firmware to your watch via WiFi with a simple click, or using an USB cable.


You can receive notifications in your T-WATCH-2020 from your Android smartphone. Simply follow the next steps.

  • Download our companion app on your phone from the PlayStore
    Get it on Google Play
  • Open the phone app and allow the permissions required (location for Bluetooth scan, access to notifications)
  • Download a new firmware to your watch with the "Bluetooth" switch enabled ("Settings" tab in web portal)
  • Link the phone app with your watch using Bluetooth

When a new notification arrives to your phone you can view it in your watch.

Build your own apps

If you are a developer with know-how in C, C++, Arduino and LVGL you could develop new apps to share with other users and allow the community to grow more and more.

Our IDE is a very simple web interface allows you to find and configure your clock with a few clicks.

  • Complete web interface
  • Online compiler
  • Upload for assets (images)

(*) For the moment this functionality is free but in the future there would be a small fee.

See it in action