Well a professional security audit would be at the top of the requirements for an established product that has a userbase and some kind of funding, but as a solo developer the least you can do before releasing your software to the world is to have at least one other person who has some experience in security look it over - that’s what I was asking.
If you can tell people that your software is secure and “anti-forensic” (!) then you must be pretty confident in your understanding of security systems to release that without even a single code review by a peer.
You need to put yourself in the shoes of a non-technical person who doesn’t know how to evaluate the relative security of all the tools that are out there available to them. If you are posting your pre-alpha untested software with a title like “Anti-forensic and secure messenger” then there are many people who will read that and think that it’s on an equal footing as the other tools they have heard of. The vast majority of people are not software engineers, and even fewer are cryptographers.
You’ve got to lead with this.