Question:
Who can help me the app erased on my Launch X431 tablet. how to download it again?
ANSWER & Solution:
Go to https://en.cnlaunch.com
At the top right there is log-in (it's very small). Click on it.
Using your username and password login.
This will take you to a screen where the first download will be the app. Click on the download icon on the right and this will download the correct app for your tool.
Install the app, log in with your username and password, and download car brands again.
Or log in to www.dbscar.com to download apk