unicodr and Unicode Keyboard for iPhone and iPad
THE SERIOUS: Have you ever needed to type just one Unicode character that isn't available on the standard iOS keyboard? Do you end up going to Google just to search for a character to paste into another app? Now you can have conveniently categorized Unicode characters right at your fingertips in a custom keyboard, and if what you need isn't there, just search for it using the search pane instead! Try searching by keyword or by hexadecimal code point.
THE SILLY: Make yourself stand out in your status updates and tweets! Flip your text uʍop
c̶r̶o̶s̶s̶ ̶i̶t̶ ̶o̶u̶t̶, put it in sᴍᴀʟʟ ᴄᴀᴘs, or make
it look olde-faſhioned. Then attach a Unicode emoticon to it and text it to a
friend, post it on your favorite social networking site, or copy it to your
clipboard to use anywhere!