iPhone app minor updates

I have an iphone app with Wordpress backend and i need some fixes and updates like follow: 1- i have a native login screen that is connected to Wordpress api and it works fine, but after login i have a webview and i need the user to be logged in automatically using the login credentials that he have entered previously. 2- I have bought an image customisation script just like Instagram image editor. and i need to connect that to Wordpress, user take a picture modify it with the script then select a category and add some description and submit as a new post. the image will be the featured image. That's all :) Waiting for your bids.