SuuntoPlus App: Stifa - a few questions

[Francesco Pagano]

Tried this new app on a trail run today, it’s quite interesting to me in its simplicity.
If I understand well the “HOW IT WORKS” part, the guidance is based on the expectation that you stay in Z2 (HR) on flat terrain, Z3 on hilly/rolling terrain, and in Z4 on steep ascents. Is this right?
I think I saw some “push” when I was in Z3 on a hilly section and, well, I didn’t feel like pushing
personal choice
Are the zones read from my settings? If saw, why does it need to read my max HR setting?
Last, what’s the Snitt metric on the SA activity summary?

[MarkG]

@Francesco-Pagano
I’ve tried it today on a run with a steep climb and a long descent (too steep for me to run in any case). I may be wrong but my understanding was that ideally you should try to stay in the ‘Hold’ zone regardless of steepness - ie a steady sustainable level of effort. If it goes to ‘Push’ then I think you have let the level of effort drift down (and vice versa - ‘Ease’ probably means you are pushing too hard to sustain for long).
I found I could usually stay in the ‘Hold’ position whether running on the less steep sections or walking hard on the unrunnable portions. On the long descent I found by pushing hard I could just about stay there - easing off quickly dropped to ‘Push’ I felt like I’d had a strong run and it encouraged me to keep trying and not drift off admiring the scenery.
I suspect this is aimed at race pace sessions up to perhaps middle distance? I don’t think it’s intended for Z2 long runs for example.
One thing I don’t understand is the score in the app afterwards - is this the % of the session spent in ‘Hold’?