Design

Wireframe, Mockup
OmniGraffle
Moqups
App Mockup Tools Reviews
筆紙


Art:
Sketch
SketchGems

Prototype:
POP  ***
balsamiq
Prott
Invisionapp ***
axure
Fluid UI
prottapp

Screenshot:
PlaceIt

Origami
Flinto
prototypr
invisionapp

proto.io
還不錯，可是適合做比較精細一點的app

Landing Page:
AppStop


giveabrief
prototypesapp
composite

參考網站:
CocoaControls*
pttrns
UIParade

http://iphone.meer.li/

個人網站:
http://pinterest.com/hanpo/iphone-ui/
http://pinterest.com/hanpo/icon/


Cut and Slice
免費的Photoshop 切圖工具


mockup:
moqups


概念圖:
omniGraffle
Cacoo
Mural.ly
imgur

.