Write an iPhone application

We are looking for a mobile app developer to continue with our coloring book app. Currently it is 1/3 done. What needs to be done: - some fixing of UI of current progress such as menu, orientation of app - in app purchases - introduction screen and push notifications - integration with Facebook to display shared photos, like and comment within app - social media sharing - storage of completed artworks in app - watermark on photos - On the coloring book screen to add another function with 50-60 artworks, with additional ability to add text for coloring and stickers. - Server/admin for adding of new artworks, content and colors ourselves easily - Subscriber only content - Exclusive time-based content that users can win if they complete certain tasks. - Animation of completed artworks to be saved/shared Currently a portion of the coloring book function is complete (need some fixing). We have the coloring books, color templates, coloring functions and filters ready. App is similar to Colorfy. Code will be provided together with the current source code and psd files. App needs to be working on all iphones and iPads ======== TO APPLY PLEASE ANSWER ALL QUESTIONS REQUIRED. 1. Let us know your estimated timeline to complete the project. Also, are you available to have a video call with us on skype to discuss? 2. Give us 3 links to the ios apps that you have developed in the itunes app store. 3. We understand that Facebook is not accessible to users from China. In this case, please let us know how we would implement the Facebook sharing functionalities (or other websites that you can suggest) to cater to the audiences in China instead. 4. We would like to monetize the app with some IAP, and also by subscription basis. Do let us know if you can implement this and your suggestions. 5. If we would like to add in a function to add in gradient color fills, please let us know the additional cost for this and timeframe.