Greetings PGUPTA71 - glad to have you onboard!
A healthy lifestyle is a process - more of a journey than a destination. SP with all its features and tools can help you along the way and with the support of its members, well, it's a recipe for success!!
Indeed SP has iPhone apps, check them out here:www.sparkpeople.com/mobile-apps.asp
Wishing you the best as you work on becoming healthier and more fit!!!
Moving More! Eating Less!
Motivation gets you started, habit keeps you going!