Personally, I do not welcome such a technique, when we need to install something on our mobile system in order to secure it.

However, there is no guarantee that the installed application will not be compromised in the future through an unknown vulnerability.
Therefore, if you have an android, it is better to refrain from using mobile to access your wallets.

As for the personal computer, MAC is a good choice.
For Windows users, the built-in antivirus is quite suitable, as well as the absence of hacked programs in the system.