If I update new version of candy soda, will I lose all the gifts?

No, I play on an Android tablet as well and I'm at the end level 1,005 waiting for the latest updates every other week. I never lose lives or boosters. You're missing out on fun game play by not updating. By gifts, do you mean lives and boosters? If so, I have yet to lose any. 

Thank you so much. 

No problem I hope it works out for you!