People attending the BTC Prague event (sadly I could not make it) should check out the Fedi federation associated with it.

In addition to functioning as a wallet app with good privacy features, it lists speakers, program details, side events, and has chat functionality.

You can also look at a map within the app to find vendors in the area that accept bitcoin, as well as do other things (eg donate via geyser fund from within the app). Convenient to have things in one place.

They also have a LN GPT within the app so you can pay a few sats and ask Chat GPT a question.

It only lasts for a week since it’s an event-specific federation. Really cool concept.