Is Blue Pockets a SAFE Pockets?

I'm gathering BTC and I can't afford a Pockets like this (pendrive)

I used to be utilizing Velocity ​​Pockets for some time however I found that it’s a Pockets with Closed Code and below custody, so I’m in search of a SAFE and LONG TERM Pockets for me to gather my satochis till I full my 1 Btc.

Then I heard about Blue Pockets and researched it, to this point it appears secure, and with a password which is way more fascinating and safe

However I wish to find out about your expertise, any ideas or recommendation? (I'm accepting everybody, and thanks on your consideration)