I 
Channels, but one of its most important screens, the Guide, just feels lacking compared to most other typical guides.
Specifically:
- No way to jump to different days.
- No way to return to "now" after scrolling to a different day.
- No current time indicator bar.
- No show start times.
Here is the Guide on the current Channels iOS app:
And for some inspiration, here are a few other apps that provide these features:
UK TV Guide
Freesat
Freeview
Plex
Would love to see the Guide screen get a bit of attention! 