We're always on the lookout for apps made by active XDA community members! If you've made such an app, let us know by contacting any portal writer.
If you've never heard of Markdown before, it's a simple way to write in plain text while still being able to generate a well formatted HTML document. Markdown's goal is to be easy to read and write regardless of the tools you're using, while still allowing you to convert your documents to other formats -- it's what yours truly uses to write these portal articles, for example. (If you've ever used reddit, text submissions and comments there use Markdown as well.)
neutriNote by XDA Senior Member bsaelim leverages Markdown's power on Android, letting you write, manage, export and print notes in a quick manner. The syntax is easy to learn if you've never used it before, and lets you do anything from writing quick text notes with simple formatting to creating tables and inserting math formulas. The latter is done thanks to the built-in LaTeX support, something you wouldn't normally find in most Markdown flavors. One button press then allows you to switch between the plain text view and the rendered Markdown preview.
A powerful search function and custom metadata let you search your notes not only by text, but also using custom tags as filters. Location aware notes also let you check notes you've taken from a specific location (it's worth noting that this feature can be disabled if you want).
