There is also a mobile app for iOS.
But in general I am always skeptical about software that advertises itself as “Based in Luxembourg (Germany, …), secure by design”. As if the country in which a software is developed has any influence on how secure a software is. 🤷
I see it similar like you, but some countries or better some people from other countries associate - made in Germany as quality indicator. It is not anymore like it was but especially Chinese value this because they know that the product might be good.
Google Play Sore link.