User Manual Arlo VMS4330P-100NAS Wireless Home Security Camera System

You dont need an ipad. Your smartphones will work. If you want to use an ipad instead of your phone, you could use any android or apple tablets.

You can leave them plugged in. In fact when you do you get access to a few features you can’t use on battery power.

But, if your internet connection goes down the Arlo will stop recording to the cloud...as well as stop recording to the external hard drive.

No problem at all. However, if you have a lot of activity (like cars passing by) I would suggest going to the direct wire. The batteries run down pretty quick

Arlo Pro 2 Yes, you will receive magnetic mounts in the kit.