This app was mentioned in 11 comments, with an average of 2.27 upvotes
Just be careful. Any halfway competent bike fitter would level the saddle, which is ideally how you want it to be. You can use your phone and a spirit level app to check to see if it is level or not. If it is, chances are instead that you need to build up your core strength to better support your upper body in that position. Adjusting the height of your handlebars to a less aggressive position can fix the problem.
Tilting the nose of the saddle up out of level would simply increase your discomfort in the saddle without addressing the pain in your wrists and arms.
Android has an app that's like a level but shows you digital degrees - it's free. https://play.google.com/store/apps/details?id=com.plaincode.clinometer&hl=en
The rest depends on material thickness and part size. Some things you can bend by hand or with a bench vise, some you need equipment for, if thickness is greater than your strength.
That's all I can think of this early in the AM :)
Clinometer is really handy for measuring slopes, grades, rise/run, etc.
If you would be mildly worried about setting down your coffee cup on your table you should check. I use this app:
https://play.google.com/store/apps/details?id=com.plaincode.clinometer
https://play.google.com/store/apps/details?id=com.plaincode.clinometer
this one gets the job done.
About the clinometer - you can get an app for your phone that is accurate enough.
https://apps.apple.com/us/app/clinometer-bubble-level/id286215117
https://play.google.com/store/apps/details?id=com.plaincode.clinometer&hl=en_CA&gl=US
The Whistler standard gives rough grades that each level of trail should aspire to stay within.
I prefer the phone app, pretty solid. https://play.google.com/store/apps/details?id=com.plaincode.clinometer
Used it to eyeball up some curtain rods.