I'm new to cryptocurrencies and I would like to store all my currencies (I read here and there that it is not safe to store everything on Coinbase).

So I tried Coinomi which seems quite good but is it safe ? Since I can send everything with only a password (not even with fingerprint or a pin), did anyone had an issue with it ?

I was also wondering, since I have Zcash, Bitcoin, LiteCoin et Ethereum, how is that possible that I can backup all these currencies with only 1 passphrase ? I mean, if I download the Zcash app for Mac OS, how will I recover my coins ?

Thank you !