@Fred
Hi, Fred!
Thank you for your concern / response.
I do not use google playstore as it is not safe (private), as with google you have no privacy whatsoever, they spy out everything like Meta does. So I do not know what it says there.  I had used Signal (recommended by Edward Snowdon) for somne time but even that was pushing me around, so I stopped using that.
Threema (the other Swiss messenger) is not free. So I never investigated it further.
If privacy is important to someone, Teleguard is really almost the only alternative, As it requires no phone number and no e-mail address to be disclosed. So it is much safer than Telegram ever was.
The disadvantages is the hitherto small number of users. This could be a peeve of google playstore users, but I just started using it recently and I have brought new people to the app already, every privacy conscious person signing up and bringing new users will make the growth of Teleguard snowball.
Here are some comments on trust pilot and in media.  It is Swiss so Central Europe is where it is most popular. If you use a Browser with translation function you can easily read the German language links.
trust pilot:
reviews by IT-media (german language):
I have not experiences any technical issues and if some come up I can leave without anything having been used about me.
Hope this explains my recommendation further.