The wallet was launched by paper for ch, a company reputable for strong security. The team is made up of experts in cyber security no wonder they provide a wallet that offers a two in one approach to safe keeping crypto asset. The first is airgap vault that offers an offline, convenient way to keep asset and the second the hardware wallet.
It is backed by app which can be installed on Android and iOS devices. It provides support for multiple crypto assets like Bitcoin and ethereun and many erc-20 token.
The wallet does not keep your private keys since it is non custodial and it can be used to safe your small crypto wallet since hardware wallet will be two expensive for such ones.