The HoYoLab Auto Sign-in program is a Chrome add-on developed by whatupxp. This free tool allows users to automatically sign in and claim daily rewards for HoYoLab games. With the ability to customize the sign-in time, users can conveniently schedule when the program will automatically perform the sign-in process.

It is important to note that users need to log in to their HoYoLab game account before using this add-on. Additionally, resetting the sign-in time will reset the entire sign-in process.

Special thanks to oddstab for authorizing the use of the source code and to 幻玥 for providing the logo.

Overall, the HoYoLab Auto Sign-in add-on is a useful tool for HoYoLab game players who want to streamline their daily sign-in process and ensure they never miss out on valuable rewards.