I’ve worked in IT for about 20 years(not a boomer. GenX). This took me longer than necessary to get working on my iPhone. Like the other reviewer, downloading the app was easy. Connecting to the WiFi was easy. However, the App could not connect to the camera.
Fix for iPhone only: within iPhone settings, scroll down to find the XDV App. In its settings, turn on Local Network. Done.
Other phones may have something similar. So, if you run into the app not finding your camera, look for that other setting. Good luck.
Once it is working, I recommend downloading any video to your phone, before trying to play it. The streaming takes longer to get the video ready to play, than it does to download, then play from the iPhone. Very short test video.
Aside from the App, you can connect to a PC(probably Mac too), via USB. Then, Power the camera on. Select USB Mode. This method, you can simply use it as a flash drive to get to your pics and videos.
1-2 stars for setup difficulty(lack of instructions really).
4 stars for ease of use and quality of video. Not too bad.
5 stars for the design. Accessories. And operating system on the device.