I've had this product for almost 2 years and it's ok. It's fine for video calling, but it's not an Echo Show or a wall mounted iPad. Think of it as a dedicated video phone with some minor Alexa capabilities.I bought the two pack to help my aging mother who lives an hour away to keep in touch with my young daugter. As a video calling device, it's simple and effective. I don't think I've had any calling issues. The killer feature is the ability to set the device up to auto-answer, so my mother doesn't have to click anything or load any apps. We can just drop in on her at any time. Sometimes I call her and I can see that she isn't home.The other great feature is the single click to connect icon with a photograph. It's super easy for my daughter (who was 3 when we first got it) to call her grandmother without any help from a grown up. Now that she is able to read and use a tablet, the feature isn't so important now that she can just ask her mom to Facetime people. My son is still very young so the feature may become in handy again in the future.The mobile app is fine for calling between app and Nucleus, but you can't use the app to call another app.I took off 2 stars because it pretty much only functions for video chat. The Alexa function works for the basics like weather, music, timers, and a few skills but don't expect much else from it. Also the the mic is seriously low end. It doesn't have the sophisticated array of mics like the Echo does, so you basically have to be sitting in front of it to use Alexa. I keep mine hanging on a wall in my office next to my desk and I mostly just turn the Alexa function off because it seems like I have to lean close to it and speak in a loud voice for it to hear me, yet Alexa speaks up all the time when I'm not talking to her.To sum it up: it's handy as a simple video calling device. It's a poor substitute for an Echo.