Yeah I'm often using StreetComplete when walking in a city, but on a bike any operation with the phone involves stopping and switching the context. Besides, SC is intended to fill the missing or fix existing data, and sometimes I need more than that (adding/fixing paths and objects, for example). So I just record an audio note while passing by something, and later on I import the video/timelapse and edit it on my computer, which is much faster than doing that while cycling.