I didn't find anything about security updates on the website so that worries me even more.
I now software dev cost a lot of time, effort and money ( being a dev myself ) but they are a lot of way that are far better than keeping updates from user. IodéOS and Murena being two examples.
They ask users to drop 60€/year for potential features updates. Even if this include security updates this is very expensive.
I don't get it. It's like kicking the hornet nest and saying getting stung is ironic.