I didn't know anything about OWNR wallet either. I just searched about it and found
this article on their official website. The article says that the wallet is close source and the funny thing is that they somehow say that being close-source is better.
Trustwallet, OWNR and any other close-source wallet should be avoided.
is helpful to check summary reviews on Bitcoin and cryptocurrency wallets like is a wallet open-source (reproducible) or not.
Some queries for checking Trust wallet and OWNR wallet.
A quick view can give No Source information for both Trust wallet and OWNR wallet.