Do you have any concrete suggestions? SAT is supported and in fact I was advocating for SAT denomination way before it was cool (in 2017).
Discussion
I haven’t use the app before, good to hear sats are supported (I would go so far as to make it the default).
This app would benefit from a lot more UI simplicity. Have you considered asking the Bitcoin Design community for help? There are people who specialize in this sort of thing who you can work with.