Here is one of my vids with the microscope https://youtu.be/9jT-q97erXQ
After hunting around a bit, I got this one from Amazon. It arrived a few days ago, and so far I've only good things to say.
Having a quality stand that can reliably raise straight up and straight down is important. They key to zooming in and out and getting a clear image relies on moving the scope closer and further away from the object, while manipulating the focus. Granted, I base this opinion on a sample size of one, but I can't see how someone can easily use one of these unless the stand travels easily vertically.
"Cainda WiFi Digital Microscope". Amazon link. Whether you get this specific model or not, make sure it comes with a stand that allows it to move straight up and down. Examples of stands.
They claim it works with iPhone, Android, Windows, and Mac. I can confirm it works with iPhone, and I have no reason to think the description is inaccurate in regards to the other operating systems.