Updated Wed 6 Sep 2016 • tags pickers, apps.
You can easily cut and paste text between the apps and your own document. The apps are just as useful for analysing text copied from other locations as they are for creating text.
Each app has its own help file, which explains how to use the app and what features are available. Features vary, but can include automatic transcription to and from the text, shape-based hints and selection methods, keyboards, codepoint listing, creating examples in markup, control over the font used, etc.
Please raise an issue if you'd like to see other characters, fonts or apps. If you want a new app, you'll have to provide (a) a list of all characters to be supported, and (b) mappings to phonemes in a language. Note that if you want to find characters and there's no character app, you may be able to use the picker-like features of Uniview. Just select a block, click on the big up-arrow below the text box (top right), then click on characters.