This is a portable EV charger which comes with a 25 foot charging cord, adapters for 110 or 220 V and a carry case. It can provide about 4 miles of charge per hour at 110V and 9 or 10 at 220V. Think of this as an emergency or occasional charger as it cannot typically provide enough juice to make charging convenient for most fully electric vehicles but can be excellent in an emergency or while on the road in an area where charging stations are scarce. If you own a plug in hybrid vehicle, this could be all the charger you ever need, on the other hand.
I say it isn't appropriate as your daily charger simply because at 110V, this will take a couple of days of constant charging to fill today's standard EV battery. Even at 240V you are looking at many hours of charging to fill a battery. As an EV driver, I would prefer (if it is available–and it increasingly is) to find a fast charger and pay to fill the car in less than an hour. The value of this unit is that if you carry this with you and stay overnight somewhere, you may be able to plug in to this overnight and add 50 to 150 miles of charge while you sleep.
Using this is simple–find an appropriate outlet and hope that you can get your car near enough so that the charging cord reaches. The included vehicle adapter is suitable for nearly any current EV except Tesla–and you can purchase an adapter which will convert this to Tesla on Amazon if you need to.
This unit is similar in most regards to the throw in unit included in the trunk of many new EVs and which most folks use until they get around to hiring an electrician to install the right wiring to buy a L2 charger which can give them 35 miles of range per hour.
I can't comment on the long term reliability or durability of this unit as I haven't owned it long enough to provide meaningful feedback.
The unit is very lightweight and compact–flat enough to fit in the sub trunk of most vehicles. There does not appear to be any interoperability with any of the major charging networks and I could not find an app for this but I am not sure it really matters as most EVs are happy to let you know their state of charge and progress reports while plugged in.