really wanted to like this tripod/mount holder! It has one of the cleverest ways of extending its size that I've ever seen. As a hobbyist, I was pretty impressed. But other details dampened my enthusiasm pretty quickly. The trick is that it's initially sized for a phone, but if you press the buttons on either side and pull the arms out slightly, they extend a little over an inch on each side, making it just big enough for a tablet if you clip it together on the short sides. The springs are very strong, which is great. I was hoping to get some use out of this beyond the regular phone/tablet because I often use them to store music devices, small synths, pedals, controllers, etc. But even though the spring would hold it, I'm afraid the lip or edge where a device is gripped is positioned in a way that doesn't even fit how I'd expect. I recently put a case on my phone that has one of those ringers inside that act as a kickstand or help you hold the phone. And it sticks out far enough on the back that it prevents that mount from getting around the edges of my phone. Too bad because I otherwise really like it. Maybe I can find a way to put something over the edges that will still be secured. Maybe they'll update the version to have a wider gripping surface. If so, I hope I notice.