I like the concepts, but the way that the messages load is irritating if you're in more than two or three groups. I also don't know how much I trust the way they anonymize users beyond the pseudonym feature. Comparing to Session's onion routing, it just feels a little bit less anonymous and secure. That said, I haven't looked real hard into it and I'm not an expert anyways.
Discussion
It’s a fork of Signal though, isn’t it? And the security of that has been looked into quite rigorously already.
It has, I'm not saying that it's not trustworthy, but Signal definitely has a much longer track record and it's not run by a for-profit company like SimpleX.
I didn’t know SimpleX was for profit. Isn’t it an open source decentralized app/network run by the community, rather than by a “for profit” company?
It's both decentralized and open-source, and developed by a "for profit" entity that's funded by venture capital. At this time, there's no profitability, and no pressure to generate profit. The focus now is in creating the best possible private messaging platform.
Keyword here is 'now'. I understand they needed to make that shift of founding a company to receive funding, but their arguments why they did that weren't compelling (at least to me). Point is, someone will want to get his ROI someday. Possibly to the detriment of the users. Plus, a central company can be sued more easily (by law enforcement etc.)