• Ok, I've done something cleaner thanks to your comments :).
    I'm now using the require("graphics_utils") , very efficient. I reduced the number of lines to 109 and I made the code a bit less repetitive thanks to some functions. It's definitively much faster. It's in Github.
    I'm still up for advices or help. I checked the swipe and I don't get how the swipe would take me from the running run.js to karvonnen.js (or if I have to merge it in one app). Also the HR input and the settings menu are not done at all. Some improvements are needed on the new graphical layout, that's the most doable part for me.
    Thanks again for your help and encouragement.

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