Mention that riot web is installable

doc/EN/app_matrix.org

@@ -38,7 +38,7 @@ Go to the *Administrator control panel* and select *Passwords* then *matrix*. Th
 
 Install the *Riot* app from *F-droid* on a mobile device. You can then log in with your username and password, making sure to select a custom server and then entering your Matrix domain name for both the main server and identity server.
 
-Other client apps are available but are currently mostly only at the alpha stage. A popular one seems to be [[https://riot.im][Riot Web]]. For details see the main [[https://matrix.org][matrix.org site]].
+Other client apps are available but are currently mostly only at the alpha stage. You can also install the [[./app_riot.html][Riot freedombone app]] if you need a user interface for desktops or laptops.
 
 * DNS setup
 It's recommended that you add an SRV record for Matrix to your DNS setup. How you do this will depend upon your dynamic DNS provider and their web interface. On FreeDNS on the subdomains settings in addition to the subdomain which you are using for the matrix server create an extra entry as follows: