The icon design - purple with the "Roku" trademark logo on it - smells of copyright infringement and so does the name Roku Remote. To clarify, this app is not made nor supported by the Roku player maker - there is another app named "Roku" by Roku Inc.
There is a bug in the channel list - it loads only once, so if you switch to another player with different channels missing. E.g. legacy players can only load some of the channels but it still shows the old list and now some icons are missing.
EnTerr about Remote 11 | Remote for Roku