I would like to build a proof-of-concept (POC) app. For this, I need to access a device's geolocation and orientation in space. I have been reading about web APIs on Mozilla Developer Network. The app should run on mobile devices, but I have never published anything on the Play Store or App Store. I assume that maintaining multiple platforms takes a lot of work. How viable would a webpage be that users can visit from their devices, which prompts for access to sensors like the gyroscope and geolocation? Would there be a quality difference between accessing sensors via the web and via a native app?

Note: Time delays is not really an issue