I'd love to, since I have a lot of nav software plus a collection of satnavs. But the signup will not allow US participants. There is no selection for USA for a country.
Evidently, this product is not-yet-ready-for-prime-time since no North American countries are available. It looks like it could be a very good app. Perhaps you could re-post its availability when North America is included. There are probably about 50 million beta testers available here.
I would have downloaded it, but with no US support, sorry.. Even though on the site it says "We are the Telmap Beta User Group. A group of beta testers that simply helps Telmap make a better product. In return, we are able to navigate everywhere there's a geographical coverage including Europe, North America and more. "