Someone tried to break into my Hyundai the other day so I ordered this asap overnight and activated it today. Have never had any device like this before.It was very simple to activate and set up the app. No hassle whatsoever other than finding a good hiding spot for it in my car.So far it's working great when I tested driving to the grocery store. Right now, it's showing the dot for my car on the map about 10-12 feet from where my car is parked in the lot at my apartment, so it's not 100% exact, but plenty accurate if someone steals the car the police will know where to look.The app is really straightforward and easy to use. I haven't tried logging into their site on my PC yet, but have been using the app on my Android phone.Here's the options in the app:1) Can quickly set a fence around your car, just tap the Fence button to automatically create a fence when you park and it'll notify you if the car moves out of the area.2) App lets you share your location with anyone, so if my car breaks down or I'm in an emergency, it'll be useful to quickly send my location to a family member. Was able to send a link through SMS to my sister and it links her to a map with the GPS device name and location shown.3) You can turn the LED light on or off through the app so it won't give away where you hid it in the car.4) It has an Energy Saver mode that you can set from the app to change the updates to every:30 min (10-15 day battery life),1 hour (15-30 day battery life),2 hours (1-1.5 months battery life),4 hours (1.5-2.5 months battery life),6 hours (2-3 months battery life),12 hours (3-4 months battery life), or24 hours (4-6 months battery life)I noticed there's an option in the settings that let's you select "Do not show low battery warning", so I'm assuming it'll notify me if the battery is low so I can remember to re-charge it?EDIT: Yes, it warns you when the battery is low. It will give you this message: "One of your devices has a battery level of 20% or lower. If your device is set to update every 10 seconds or faster, it is now in power conserve mode and will update every 30 seconds."5) There's a History button in the app that lets you review where the car/device has been. You can select Today or Yesterday from the quick drop-down menu, or select a specific date from the calendar.6) There's a whole section of instructional videos inside the app and a FAQ section which are both helpful if you need it. However, it was super straightforward to set up so I didn't need to use those.7) In the settings you can change the map type between a regular google map or satellite view map. If you change the map type, it seems to delete the fence you set. But it only takes half a sec to tap the Fence button again and reset it. Might be a minor annoyance if you have a whole lot of devices and are switching between map types frequently?8) The time zone seems to have been automatically set to US Central time, so you may need to go into the settings and change it. But, even though I changed the time zone to be correct, it's still showing the alert on my phone with a timestamp in CST when I drive the car out of the fence.EDIT: I contacted customer service and they were able to fix this for me so time zone shows correctly now. However, due to a recent update of their app, it stopped showing fence notifications for me completely unless I had the app open constantly. Turns out it was because I'm unable to upgrade to Android 12 on my phone model, but they were still very helpful and patient and able to find a solution for me. So now it's working again just fine. They had set it up so it would send me an email notification instead, but whatever they did also magically fixed the regular app notifications somehow. So if you have any issues, they seem willing and able to help or a work-around if possible.9) You can rename each GPS device if you have more than one so you know which one is in which car, etc.10) You can change the icon type and icon color that shows on the map for each device! There's a lot of icons to choose from like car, pickup, semi-truck, bus, ATV, EMS, fire truck, bulldozer, bicycle, yacht.... you get the idea.11) They have the text, phone, email and address right in the app to contact support if you need help.Can't comment on the battery life holding up yet since I just got it today, but I just put a reminder on my phone to take it out and re-charge it on weekends when no one's gonna be lurking around the parking lot in broad daylight and other residents are around.EDIT: Batteries lasted for 3 1/2 weeks from the day I first activated my device until battery completely died. I have it on updates every 3 minutes. Maybe it will vary depending on other factors for you, but for me that's how long it took.The magnet on it seems very strong, but to be fair I didn't try mounting on the outside of my car, so I can't comment on if it'll fall off or not. I stuck it to a metal part hidden inside the car.There's a good variety of plans to choose from with updates at differing intervals and discounts if you pre-pay lump sum. It says you can cancel your subscription at any time.I'm not able to pay the lump sum ones, so I went with the cheapest month to month one at $19.95/month for 3 minute updates so I'll know pretty quick if anyone's moving my car. It looks like the shortest update option is every 3 seconds if you need it that frequent.Very happy so far at how quick and easy it was to get setup. Will update this review if anything goes terribly wrong with it, but seems like it'll work for what I needed it for.Have a steering wheel lock and stuff on the way as well to hopefully deter or slow down anyone from trying again, but worst case I'll be able to track it now and tell the police where to look.EDIT: After using this for about a month and half, no earth-shattering problems. The couple of issues I had, customer service was able to resolve for me as mentioned.