That's too much work for little to no gain, anyone who runs a mining farm should be able to afford a PC or laptop of some kind, if the farm has many gears then tracking them on a mobile app is going to be a nightmare, if it has a few then monitoring apps are not really needed to begin with.

Not trying to discourage OP, but the best question to ask yourself before attempting to sell a new piece of software is "why would people use it", since 99% of the users won't be to able to safely check if the software is "honest", chances are -- most of them won't run it anywhere near their mining farms, all you need to have a miserable couple of months ahead is a nightswitcher or antbleed virus infecting a dozen miners on your farm.