I've published another tiny tool app: Download Shortcut.
It solves a problem which has vexed me on Android: what if an app lets me open a link to a file (say, an mp3) but doesn't let me download it to my phone? Before, I'd end up in a tab in Chrome that would let me play the mp3, but not save it for listening later. There's no actual way to download the link in this tab:
With this app, you can "share" anything with it; if it's a valid URL then it'll download it. I now have a way to download the file from a tab in Chrome, for example:
The source code is here if you'd like to check it out, but there's not much there! It's quite a simple app.