Bubble Level App: Bubble Level
Protractor App: Protractor360
Smartphone: iPhone 11 Pro

Drill
Brand: HiKOKI
Model: DV36DC

Rubber Anti-Slip Tape
Brand: TRUSCO
Model: G10-505

Double-Sided Tape (Removable)
Brand: Nitto Denko (Nitto)
Model: 5000NS

Note: The bubble level app cannot be used to calibrate materials that are perpendicular to the floor.