I didn't know. The offer on paper looks pretty good. There are even apparently Japanese stocks (be careful, I'm wary because some brokers like cornertrader advertise Japanese stocks and there are actually only big caps...).
However, they advertise the lowest rates on the market. This is perhaps true compared to Swiss intermediaries. But compared to brokers like DEGIRO or especially Interactive Brokers, they are much more expensive, whether for Swiss or foreign stocks. The commission rate on Japanese stocks is even downright prohibitive.
In short, a little competition, especially in Switzerland, is always good. We'll have to see the feedback from users. In the meantime, as far as I'm concerned, I'm sticking with those who have proven themselves (and who are cheaper anyway).