GuardaWallet for XRP

Hello!
Here is info https://xpring.io/docs/use-cases/#payments that ToastWallet a free open source XRP wallet for iOS, Android, Windows, Mac and Linux.
But this wallet is no longer supported by developer.
I was search for a replacement, cross-platform non-custodial wallet and found GuardaWallet https://guarda.com
How open and reliable the software from Guarda is?
Thanks advance!