The Amazer Push device is basic and straightforward to use; it does not require or work with an app.
Simply plug in your diffuser to the wall upright, and choose a grade 1-4 (the greater the grade, the more frequently it will diffuse) on the front of the unit.
There are also two buttons: one on the left for 24 hours and one on the right for 12 hours (light-sensored). If you choose 12 hours, it will not dissipate fragrance if there is no light.