The Apex needs to be closed, and it is a great implant, it’s probably now my most used implant, But, the awesome thing about VivoKey (the company) is, the staff are like us, they are a part of the community, they are us; that means they know what some people want.
So they gave us an alternative that has all the openness it sounds like you are after. You are in complete control.
FlexSecure
https://forum.dangerousthings.com/t/flexsecure-vs-apex-flex/15946
Most of us who have been around a while, fully trust Vivokey / Dangerous Things, So I would still highly recommend an Apex, I have had one for years and zero problems or issues, I actually have both an Apex and FlexSecure, My Apex is my primary, and my FlexSecure is my backup / overflow.
But if you can’t bring yourself to to get an ApexFlex, grab yourself a FlexSecure, It sounds like online security is important to you (as it should be) you won’t be disappointed with the FlexSecure.