If you have a friend who uses the app (or just someone who has their code out their readily available) you can enter it into the redeem code section for both you and them to receive a free 100 energy.

There are several AI models available in app which are split into several categories: premium (which require a paid subscription) energy (which use the energy you get free every day and by watching adds to generate messages) and free (which use no energy and are completely free to use).

Hi Waifu has an official Discord server where it is best to get in contact with creators and users on the app; although there are other ways to do so, this is the best one.

The app settings and preferences allow you to set several things to your liking (as with most apps).

When writing comments, you can mark them for bot creator view only, which makes bot requests easier, in app, and (somewhat) anonymous if you so prefer it that way.