works with my Odin B600 exercise bike (some apps only work with a specific brand of equipment)
adjustable resistance, including on flat sections
display time, length of ride, speed, average speed, gradient, and height meters
Would very much prefer, but not dealbreakers:
real world routes
videos of routes with variable playback speed based on my pace
in absence of the above, ability to record data in the background rather than stop when I switch to another app
Nice to have but not necessary
FOSS or at least not too data-predatory
Apps I've tried so far
Kino: DEFINITELY my favorite so far, it has pretty much everything I want, but it's paid and my trial runs out soon
Trainerday: Freemium, free version doesn't fulfill the third hard requirement
MyWhoosh: ticks ALMOST all boxes, but the lack of variable resistance on flats is a dealbreaker and that combined with the overwhelming number of "rivals" to overtake at any moment had me overexerting myself to the point where I had to stop from both exhaustion and risk of injury after significantly less time/distance than I'm usually capable of when doing higher resistance and lower cadence