Is Blue Wallet a SAFE Wallet?

I'm collecting BTC and I can't afford a Wallet like this (pendrive)

I was using Speed ​​Wallet for a while but I discovered that it is a Wallet with Closed Code and under custody, so I am looking for a SAFE and LONG TERM Wallet for me to collect my satochis until I complete my 1 Btc.

Then I heard about Blue Wallet and researched it, so far it seems safe, and with a password which is much more interesting and secure

But I want to know about your experience, any tips or advice? (I'm accepting everyone, and thanks for your attention)