[daveguy]

Feral nailed it. It is not a pairing issue. It's a question of whether it will be a pain even after it's all set up.

This 1:20 video is definitely better. For the sole reason that you include the fact that four buttons are mapped to four buttons. One press for the app and one for the function. Personally I think you should simplify the operation or only explain how it works for 4 apps. Let people who are intrigued find out you can program it to do a special sequence of functions across apps with a single special touch.

Those 1M+ campaigns all had a very simple functions and operation and with knocki you easily know what the 2-3 different knock types do because your knocki is in a very specific context (kitchen table, bedside, bathroom, etc).