I'd like to ask what your most useful applications are? Not the most used, necessarily, but the ones that come in useful, even if only occasionally. Calculator probably tops my list, though it's a default application. CallBlocker is next, though it's not an official application. It blocks unwanted calls by automatically hanging up. I get a lot of calls from people trying to sell me things. Tunnelbear comes in useful occasionally when I find those pages that won't let me access them from my part of the world. Collins COBUILD Dictionary is always a help in my work. Mobile Mouse occasionally helps. I can move the mouse with my phone with this application. This is useful when I'm lazy but could also work for people who've hurt their leg/have mobility problems. Lingopal - basically a phrase book. I live in a country where I barely speak the language. It's useful to travelers.