This device can be a bit buggy at times with blocking and unblocking apps (unfortunately you can set a schedule for all or none access, but you can't set a schedule for specific apps/sites, so those of us who have kids in virtual school, or ones that need to do homework on their pc without distractions are left to manually blocking and unblocking apps). Sometimes it works flawlessly, sometimes not so much. The custom filter option is also painfully buggy. If you need to add a specific website that isn't listed on the predefined list of stuff to block, you can add it with the custom filter. This sounds great until you need to turn off the filter for whatever reason (in our case, it's discord. It doesn't always need to be blocked, but when my son is working on school work, it does.) The button to "allow" or "block" is buggy in that if you click the next "allow" button in the list before the first has fully "saved" the new setting, the line will completely disappear and you have to add it all over again. (Good luck to you on remembering long or complex URL's!) Additionally, I had to have this device RMA'd with the manufacturer due to it repeatedly disconnecting or not staying connected to the app on my phone. The last nail in the coffin for me for this device was network speed. Because of the way this device works, all traffic on your network is routed through it. Unfortunately over wireless, it is PAINFULLY slow, and the suggested solution to make it faster is to plug it in via Ethernet. However, the Ethernet port is only 100Mbps. In the age of pretty much everything being gigabit as a standard, to see this device come out with a 100Mbps port is disappointing. Routing my entire network's traffic through a 100Mbps port was absolutely a no go.
That being said....if you are looking for parental controls like this, I beg of you, GET A NETGEAR router that has Circle built in! I ended up replacing this nightmare with a Netgear Nighthawk, which runs MUCH faster, since it's actually using gigbit ports and the filter is integrated into the router. Not a single slowdown since I did this.