Hi This is kiran.
I have 4+ years of experience in Sencha Touch HTML5 mobile development framework.
Single code.
Multiple builds -> Android,iOS,Blackberry,Windows.
I will show the recent mobile app developed with sencha touch.
do you have wirframe/mock ui/ui design in place.
Provide more details about the requirement. Then i can provide the estimate more accurately.
Thanks,
Kiran