i. the honest answer
There is no store download, and that is fine
People search for the Joingy app, the Joingy download, even the joingy.com app, expecting a listing in an app store. There isn't one. Joingy is a web app: video chat, voice, text, your coins and the people you follow all load in the phone browser you already have. Open the page and it works, with no installer and no update to wait for.
What you can do is pin Joingy to your home screen. From then on it opens full screen, without an address bar, and behaves like any other random video chat app on your phone. It just skips the part where it eats storage and nags you about updates.
We have never published a Joingy APK. If a file uses our name, somebody else made it. Leave it alone.
