Will my phone be full of video files if I use it as a camera?

No, when you use Sporfie, there is no need to worry about your device's storage capacity.

When your device is set as a camera, the footage saved using the app is automatically uploaded to our servers–nothing is stored locally on your personal device.

NOTE: There is an option to Record the Entire Event, however the default settings for this are always in the "OFF" position when you add a camera.