I'm fed up with being tracked, spied on, monetized and exposed to whoever wants to buy my data. My health and fitness data and my whereabouts are my business and no-one else's. I want a fitness app which doesn't feed my data to a third party, i.e. which simply captures the data from my various sensors (wristband, GPS, inertial sensors in my phone) and graphs that data for me on the phone screen. I've been trawling Google Play for such an app but the weasel-wording of the descriptions doesn't tell me whether they rely on uploading of the data to function. Does such an app exist ? I'd happily pay good money for it.