Is there an app for Jitsi?

    It's called:  Jitsi-Meet

    Yes, for iOS and Android:  https://jitsi.org/#download
    and for OSX and Windows as alternative to the browser: https://github.com/jitsi/jitsi-meet-electron/releases

    As alternative to the browser

       - for MacOS/OSX   https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.dmg

    For OSX: After downloading, right-click on the icon and select "Open". You have to accept the warning and open it anyway. Then at the gear enter a display name and the server (https://jitsi.kh-berlin.de). From MacOS 10.15 please read additionally here.

    For Windows: Cancel the firewall warning at the first start, then set the correct display name (otherwise the Windows login name is taken) and server (https://jitsi.kh-berlin.de) at the cogwheel. Admin rights are not required.

    Here you can see which version is the latest one: https://github.com/jitsi/jitsi-meet-electron/releases