How to help newly adopted stay feel less on edge around my dog?

This week (after taking him to the vet for vaccines and to check for a chip that wasn't there) I adopted this stray that's been hanging around my house for a couple months. He is incredibly sweet, but very nervous around my 25 lbs dog. My dog has never met a cat, but he has been mainly uninterested. The cat however is very nervous around the dog so I've been keeping my dog in the gated off kitchen and my new cat in the living room. Cat will occasionally walk by the gate to hiss but keeps on going. I don't force any interaction. Any advice on how to help the cat feel as comfortable and safe as possible in this transition/introduction? This is my first cat so idk what I'm doing here.

What kind of cat is this stanky cat?

Day 10 post spay, does this look okay?

isn't she lovely?

This mango is a unit, well over a pound of flesh

The Great Heidelberg Tun (1751 CE); an extremely large wine vat in cellars of Heidelberg Castle, Germany

Mail day. Popped their cherry within a couple hours of FedEx stopping by. New T100’s & Vokeys

I’ve been golfing for over 10 years. Never been formally fit for new clubs. Always bought used and added +1”. Didn’t realize the swing weights weren’t adjusted and I was playing funky weighted clubs. Finally got fit and built +1 from the factory. They feel amazing. Wtf was I waiting for..

Kinloch Golf Club, New Zealand

I’m a 25 HCP and this definitely was one of the hardest places I’ve played at. Great course and scenery, didn’t take many photos, just some tee videos

A nice view to end 9 holes

Need Help Deciding

Okay so, hear me out. I’ve got plenty of friends who let me use their rangefinders (slope calculations included) keep in mind I play at a nameless goat ranch 9 hole course, so I only need rangefinders when we play other courses because I can eye out my distance on a course I’ve played for 10+ years. But so anyway, if we’re going $1 a hole or any such thing like that, their range finders are off limits, so I use my feel and eyes, which are usually quite accurate but! Does anybody have a phone app Golf GPS type thing, that isn’t a nightmare to sign up for or costs $30 a month, I just want a free(ish) phone distance calculator, and if they don’t exist then yes I’ll buy a range finder. I’m just usually so hungover or drunk that my hands shake and it’s hard to shoot the pin, although my score doesn’t take a hit. Any help would be appreciated, also someone tell me how to sharpen grooves

Would you buy this even if you don’t need it?