Quoted from Deyanks98:
I need to figure out this app to fine tune my pins as outside of a regular level on the glass to make sure that bubble is in the center for left right and also the bubble on the pin itself being between the two lines I'm not real swift with this Pinguy app. One problem I have when laying my phone on the glass without any cover on it is it slides down the playfield on me. Do you guys leave a case on the phone or what works best? Are there step by steps or a video somewhere of how to do this best? Also does a digital level give you pitch as well as centering left to right? Sorry for a bunch of questions just thought I'd try to get this right for my Premium once it arrives.
Never measure anything on the glass. Measure directly on the playfield. I do not use the phone app levels, but if you calibrate with the case on, you would leave the case on. A real digital level will measure both. Place it side-to-side to measure level, flip it to front-to-back to measure pitch. Measure at multiple places around your playfield. Nearly all playfields have minor warp, slightly raised inserts, etc that will lead to different measurements at different spots. I usually measure as far up the pf as I can, near the middle, and right above the flippers then use a rough average between them.