We've been building the MVP into a more approachable product, iterating on features to make the app more usable and soon I'll start adding more info buttons to explain everything better. Right now it's still somewhat in the MVP stage where we hardly tell people how anything works.
On the same time I've been experimenting with ads running $5 per day ads on Instagram, Facebook, and Reddit. I've tested different wordings to see what kind of communication converts the best and is easiest to understand. So far the cost per click has been surprisingly low, at $0.2-0.3. I don't know if this is normal in this target segment or we've just been lucky.