iOS 7 uses all these fonts:
http://support.apple.com/kb/HT5878?viewlocale=en_US&locale=en_US
- Academy Engraved LET Plain
- Al Nile
- Al Nile Bold
- American Typewriter
- American Typewriter Bold
- American Typewriter Condensed
- American Typewriter Condensed Bold
- American Typewriter Condensed Light
- American Typewriter Light
- Apple Color Emoji
- Apple SD Gothic Neo Bold
- Apple SD Gothic Neo Light
- Apple SD Gothic Neo Medium
- Apple SD Gothic Neo Regular
- Apple SD Gothic Neo SemiBold
- Apple SD Gothic Neo Thin
- AppleGothic Regular
- Arial
- Arial Bold
- Arial Bold Italic
- Arial Hebrew
- Arial Hebrew Bold
- Arial Hebrew Light
- Arial Italic
- Arial Rounded MT Bold
- Avenir Black
- Avenir Black Oblique
- Avenir Book
- Avenir Book Oblique
- Avenir Heavy
- Avenir Heavy Oblique
- Avenir Light
- Avenir Light Oblique
- Avenir Medium
- Avenir Medium Oblique
- Avenir Next Bold
- Avenir Next Bold Italic
- Avenir Next Condensed Bold
- Avenir Next Condensed Bold Italic
- Avenir Next Condensed Demi Bold
- Avenir Next Condensed Demi Bold Italic
- Avenir Next Condensed Heavy
- Avenir Next Condensed Heavy Italic
- Avenir Next Condensed Italic
- Avenir Next Condensed Medium
- Avenir Next Condensed Medium Italic
- Avenir Next Condensed Regular
- Avenir Next Condensed Ultra Light
- Avenir Next Condensed Ultra Light Italic
- Avenir Next Demi Bold
- Avenir Next Demi Bold Italic
- Avenir Next Heavy
- Avenir Next Heavy Italic
- Avenir Next Italic
- Avenir Next Medium
- Avenir Next Medium Italic
- Avenir Next Regular
- Avenir Next Ultra Light
- Avenir Next Ultra Light Italic
- Avenir Oblique
- Avenir Roman
- Bangla Sangam MN
- Bangla Sangam MN Bold
- Baskerville
- Baskerville Bold
- Baskerville Bold Italic
- Baskerville Italic
- Baskerville SemiBold
- Baskerville SemiBold Italic
- Bodoni 72 Bold
- Bodoni 72 Book
- Bodoni 72 Book Italic
- Bodoni 72 Oldstyle Bold
- Bodoni 72 Oldstyle Book
- Bodoni 72 Oldstyle Book Italic
- Bodoni 72 Smallcaps Book
- Bodoni Ornaments
- Bradley Hand Bold
- Chalkboard SE Bold
- Chalkboard SE Light
- Chalkboard SE Regular
- Chalkduster
- Cochin
- Cochin Bold
- Cochin Bold Italic
- Cochin Italic
- Copperplate
- Copperplate Bold
- Copperplate Light
- Courier
- Courier Bold
- Courier Bold Oblique
- Courier New
- Courier New Bold
- Courier New Bold Italic
- Courier New Italic
- Courier Oblique
- DIN Alternate Bold
- DIN Condensed Bold
- Damascus
- Damascus Bold
- Damascus Medium
- Damascus Semi Bold
- Devanagari Sangam MN
- Devanagari Sangam MN Bold
- Didot
- Didot Bold
- Didot Italic
- Diwan Mishafi
- Euphemia UCAS
- Euphemia UCAS Bold
- Euphemia UCAS Italic
- Farah
- Futura Condensed ExtraBold
- Futura Condensed Medium
- Futura Medium
- Futura Medium Italic
- Geeza Pro
- Geeza Pro Bold
- Geeza Pro Light
- Georgia
- Georgia Bold
- Georgia Bold Italic
- Georgia Italic
- Gill Sans
- Gill Sans Bold
- Gill Sans Bold Italic
- Gill Sans Italic
- Gill Sans Light
- Gill Sans Light Italic
- Gujarati Sangam MN
- Gujarati Sangam MN Bold
- Gurmukhi MN
- Gurmukhi MN Bold
- Heiti SC Medium
- Heiti TC Light
- Heiti TC Medium
- Helvetica
- Helvetica Bold
- Helvetica Bold Oblique
- Helvetica Light
- Helvetica Light Oblique
- Helvetica Neue
- Helvetica Neue Bold
- Helvetica Neue Bold Italic
- Helvetica Neue Condensed Black
- Helvetica Neue Condensed Bold
- Helvetica Neue Italic
- Helvetica Neue Light
- Helvetica Neue Light Italic
- Helvetica Neue Medium
- Helvetica Neue Medium Italic
- Helvetica Neue Thin
- Helvetica Neue Thin Italic
- Helvetica Neue UltraLight
- Helvetica Neue UltraLight Italic
- Helvetica Oblique
- Hiragino Kaku Gothic ProN W3
- Hiragino Kaku Gothic ProN W6
- Hiragino Mincho ProN W3
- Hiragino Mincho ProN W6
- Hoefler Text
- Hoefler Text Black
- Hoefler Text Black Italic
- Hoefler Text Italic
- Iowan Old Style Bold
- Iowan Old Style Bold Italic
- Iowan Old Style Italic
- Iowan Old Style Roman
- Kailasa Bold
- Kailasa Regular
- Kannada Sangam MN
- Kannada Sangam MN Bold
- Malayalam Sangam MN
- Malayalam Sangam MN Bold
- Marion Bold
- Marion Italic
- Marion Regular
- Marker Felt Thin
- Marker Felt Wide
- Menlo Bold
- Menlo Bold Italic
- Menlo Italic
- Menlo Regular
- Noteworthy Bold
- Noteworthy Light
- Optima Bold
- Optima Bold Italic
- Optima ExtraBlack
- Optima Italic
- Optima Regular
- Oriya Sangam MN
- Oriya Sangam MN Bold
- Palatino
- Palatino Bold
- Palatino Bold Italic
- Palatino Italic
- Papyrus
- Papyrus Condensed
- Party LET Plain
- Savoye LET Plain CC
- Savoye LET Plain
- Sinhala Sangam MN
- Sinhala Sangam MN Bold
- Snell Roundhand
- Snell Roundhand Black
- Snell Roundhand Bold
- Superclarendon Black
- Superclarendon Black Italic
- Superclarendon Bold
- Superclarendon Bold Italic
- Superclarendon Italic
- Superclarendon Light
- Superclarendon Light Italic
- Superclarendon Regular
- Symbol
- Tamil Sangam MN
- Tamil Sangam MN Bold
- Telugu Sangam MN
- Telugu Sangam MN Bold
- Thonburi
- Thonburi Bold
- Thonburi Light
- Times New Roman
- Times New Roman Bold
- Times New Roman Bold Italic
- Times New Roman Italic
- Trebuchet MS
- Trebuchet MS Bold
- Trebuchet MS Bold Italic
- Trebuchet MS Italic
- Verdana
- Verdana Bold
- Verdana Bold Italic
- Verdana Italic
- Zapf Dingbats
- Zapfino