Samsung S5 (1,080 x 1,920 pixels) + Android v6.0.1 + Ryver v1.23:
Text font to small. Inbut box to small. WhatsApp for example has a much better text and input box size.
Within 1:1 chat's name of partner and weekday not necessary in every message - see WhatsApp.
Less is more.
Same applies to the Windows Desktop Client and all the other Ryver apps - I guess.
Best regards from Germany,
Customer support service by UserEcho