◈ ◎ ● ◐ ◑ ☉ ☎ ☏ ☜ ☞ ☺ ☻ ☼ ♠ ♡ ♢ ♣ ♤ ♥ ♦ ♧ ♨ ♩ ♪ ♫ ♬ ♭♯Special Characters, including more than 200 SMILIES characters , and Number symbols, unit symbols, mathematical symbols, punctuation marks, special Chinese characters,currency signs, Japanese symbols, Lower/Upper case Greek letters,Russian symbols,Tibetan symbols and Astrological symbols, Statistical Symbols .etc.

◈ ◎ ● ◐ ◑ ☉ ☎ ☏ ☜ ☞ ☺ ☻ ☼ ♠ ♡ ♢ ♣ ♤ ♥ ♦ ♧ ♨ ♩ ♪ ♫ ♬ ♭♯
Reviewed by Appadvice.com at 27/05/2012:
"Add a little flare to your text with this fun productivity app. It allows you to choose from over 200 different characters from categories like smilies, math, unit, Greek, and list tabs. You can then copy your characters or be brought directly into different services like email, Facebook, Twitter, or Messages."

v1.4.2 added :
1.shorten app name Special Characters to Special Chars
2.shrink the size of the gear icon size
3.correct the spelling mistake
4.add Some Statistical Symbols

v1.4 added:
1.fix Crash bug at earlier than iOS 5
2.fix bug 'repetition of selected character is not permitted'
3.Add a Popover Tip for show how to Switch keyboard
4.Add powers numbers, Tibetan symbols and Astrological symbols

v1.3 added:
1.add dagger, double dagger, pilcrow, section sign, broken vertical bar, asterism, interrobang, and ironic sign, copyright, trademark, and registered trademark signs. etc..
2.add currency signs and more unit and math signs
3.Share the content to Facebook , Twitter, Sina Weibo , Tumblr
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You can easily enter these characters, switch to the system keyboard to edit your text, send text including Special Characters via Text messages or Mail, and also Share the content to Facebook , Twitter, Sina Weibo , Tumblr

Hope this App improve the efficiency of your input, and facilitate your life.