Hi there, fair enough that’s true for now, but we tried to future proof it by putting Freemium based on what they say here

https://simplex.chat/faq/#how-are-you-funded

“What will be the business model? We are focusing on product-market fit, and as such the business model is still a work in progress. However, the app will have a freemium model with extra features or capabilities for paid users (taking into consideration a potential formula like 5% paying $5/month is $3/user/year - ~90% gross profit margin).”