IOS and Android app

I am looking for some help in IOS and Android app development. It's a very basic assessment which involve connection to clouds like google drive, Microsoft onedrive, dropbox, etc. with other functionalities. Thanks. Update 14/06/2017 Please find the detailed requirements below: 1. Application should connect to the following but not limited to: Google Drive Onedrive Dropbox Box IDrive SugarSync SpiderOakONE Owncloud FTP, etc. NAS (Network Attached Storage) 2. Application should be able to Pull and display all the documents (docx, doc, pptx, ppt, xlxs, xlx, text, etc.). Pull, display and play all the music files. Pull, display and play all the video files. Pull, display and create a gallery all the picture files. 3. For Audio and Video files, application should be able to: Create playlist Edit playlist Note: Please provide development estimate with amount.