from what I understand, the Jaxx vulnerability is only on the desktop version in which an attacker could decrypt your private key if they had access to your computer.

I think the ios is as safe as any other app wallet out there.

But I still don't get why there is such distrust over hot wallets. People all say never put life savings on it.
Then why is there a market for app wallets at all ? Why not just have two choices.. Exchange / online and Cold wallets (Hardware & paper). Why bother with all these app wallets and desktop wallets if they are so risky to use?