Friends on Reddit are saying Guarda wallet is the best on mobile, how true is this because I can't find information if its open or closed source, I knew I will find real facts on this forum that's why I bring this question to you.
I tested Guarda wallet while ago but only their desktop wallet, and I have to say that I was not impressed at all.
They used old format for bitcoin addresses, and having no support for segwit in 2022 is bad decision in my opinion.
I checked their github page and they are closed source wallet, having only partial stuff released in open source, so I would not suggest anyone to use it.
If you want open source alternative mobile wallet for multiple cryptocurrencies you can try testing unstoppable.money, that has some nice privacy features.
If you want to use wallet only for Bitcoin you should use Bluewallet or Electrum.