Sonic Tools Spectrum analyzer for your phone - how to use, basics

Simple introduction to a fun tool, and a few ideas what you can do with it.
Here's the link to it, if you are interested:
https://apps.apple.com/us/app/sonic-t...
PS: I'm NOT in any way connected to these fine folks, never talked to anyone from the company. I've just downloaded this fun free program about a year or two ago, and have had a lot of fun with it since. I've used it a LOT, so this is not a cursory report after fiddling an hour or so with it.
If you like what I'm doing, and found my videos helpful, and they saved you money - then you can return the favor and the balance in the universe through Buy me a coffee, which is a simple way to donate as low as 2$. Your continued support is most welcome, and will allow me to maintain this channel in the future. -- So you can find more tips, and continue saving more money on your audio adventures:
https://www.buymeacoffee.com/RealWorl...
I appreciate every kind gesture. Greetings, János