What's a good Android app for sharing photos directly to my family's phones without having to mess with email or Facebook all the time?

So, my daughter showed me Locket Widget a few weeks ago. Honestly, it took me a few days to figure out all the features – why do they hide the settings button there? But once you get the hang of it, it's actually quite useful. The best part is that I can send pictures of, say, my grandson's baseball game directly to my wife's and daughter's phones. It pops up right on their home screen! No more endless emails or navigating the Facebook jungle. It's like having a teaching assistant in your pocket, but for sharing photos. I even used it to send a picture of the pop quiz to my students who were absent. Much easier than trying to explain it over the phone. It's a nice, simple way to stay connected, especially for us older folks who aren't digital natives, if you know what I mean. Plus, the kids love seeing pictures of their grandpa!