Get your proper digital one and use it exclusively. Consumer tire gauges are basically never calibrated consistently, especially mechanical ones, and you'll drive yourself nuts getting all different readings from different gauges, none of them agreeing with each other even though they're all measuring the same thing. Down that road lies madness.

The pencil gauges in particular are uniquely terrible, and are tantamount to random number generators. Find all of yours and throw them away.

As others have said, your tires should not be losing air that fast. You probably have something wrong with one or both of your valve stems, or the beat seat if your tires are tubless. I dutifully check my tire pressure before, er, well... most rides, like the MSF manual told me all those years ago. Many rides. Okay, certainly before some rides, occasionally.

I have seven (7) bikes in my stable right now. (They're the ones in the header image in this very community.) I have to add air to the tires in each of them once, maybe twice per season at the outside. If you're having to do it every day, something is wrong.