Are you sure this is a new application?

What about the simplest and most understandable application for beginners, this is the PWA app Pinafore.

For those who have used third-party applications for Reddit, such as Infinity and Boost, Pinafore will be quite comfortable.

The last activity on the page was many months ago.
On their website page 404

And where can I find the compiled installation files?

Mastodon apps don’t have the same variety of UI as Lemmy. Applications for Lemmy are simpler and more intuitive for new users who come from traditional social networks (such as Reddit).

Who knows what the developers are planning?

Is there a road map for Lemmy?