iOS (iPhone/iPad) Filemanager (FTP/WebDAV/Cloud) App

We are in need of a iOS (iphone and ipad) client capable of modern cloud sync features (more of a filemanager with ability to connect to FTP and WebDAV). We want a client similar to WebDAV Nav or iStorage 2 ([login to view URL]) We donot need all the features as we just want it to connect to only and only our servers (WebDAV and FTP). We just want a few changes for our use like locking/using a specific hostname for connecting to webdav account of user which will be provided by our API. So user can just give his username and pass and the app will use our REST API to GET the hostname to use for WebDAV connection and just a few minor changes. As we will be a free service, we will probably provide our app via Cydia or iStore for free since in our country the WebIT economy isnt that good and 70% people donot spend or buy any apps at all online, instead we will use ads service to show ads/html content at the bottom footer of app to manage our server/service costs. We wont mind using any opensource classes/libraries available online (like [login to view URL] or [login to view URL] (java) etc.). We just need functionality for now with minimum costs as we are a individual small project which isnt backed by any venture firm yet. And actually it will be good if you use opensource library as it will save effort and time. We need professional work, on time delivery, module based milestones and good communication. No Advance milestone releases. Automated or Copy pasted bid messages or PMs will be ignored, its better to write custom message with what you can do for the project. Make sure to check screens/apps of both the apps to know what we want. Provide your past portfolio or best ios apps you have made in past if sending a PM. You can bid more than $750 aswell as we have made our range $250-750 due to freelancer recommendation. Please DO MAKE SURE that this app needs to be for both iphone and ipad