I tried both Riffstation and Chordify, and, for ME, the way Chordify shows the chords is easier to work with ...
One thing I noticed is that both picked up a lot of the 'passing' or what I might call 'incidental' chords that guitar players play while strumming ...
IMO none of these programs makes you play smoother as your always looking at the real time chord changes popping up and many times you have no idea what they are and by the time your brain absorbs them your playing & timing falters big time creating a choppy performance at best....I say just write them out yourself if needed or use a very simple fake sheet or better yet just memorize and improvise the song in your own style. and while this is going on you also have to navigate the keyboard also changing sounds, variations, singing etc etc ...
Not at all
Chord charts are a guidance tool, much like driving directions..you can make as many wrong turns as you like, but won't get lost, because it is correcting your path.
You are confusing music scores where you have to be precise, especially with arrangements with other musicians..
BTW: If you guys have not tried BB or Powertracks since 2012..you are missing the boat..packages include some of the best sounds you can buy with real drums and other sampled sounds..Go to their site and check them out..no not free and 60gb in size..and not for impatient folks that do not want to learn something new..