Mockup iPhone application

Hi Freelancers, Simple project. I'm seeking a mockup application. i.e. something that looks and acts like an iPhone application but isn't. i.e. using something like marvelapp.com. I previously had someone do this for me and I need changes, but I can't get a hold of them and can't access the original files. HOWEVER I have screenshots of all the pages, so I just need someone to remake the previous work, with the changes. Pretty damn simple. I would do it myself but I don't have time. I will send all the screenshots upon project award. You MUST give me access or ability to make changes myself to avoid a repeat of my current situation. Key Points: Must be able to click on buttons to link to pages. In total there are 7-10 pages to link. Must be able to embed a GIF and play it automatically (i.e. without having to click on anything) Must also make the GIF. I will give detailed instructions, but it will be a very simple graph like animation. i.e. showing a graph move. You will need to make the stills and compose them into a GIF Must make allowance for revisions. Although all the UI/UX is already done, I'm presuming your first pass with have errors in functionality. Must be willing to talk on Skype. This will go A LOT smoother if I can show you how the previous work functions so you can replicate. Professionalism is very important. I don't accept delays or excuses. I don't have the original media but... there really isn't much except for basic shapes and you can cut them from the screenshots. This project can't possibly be simpler! Looking for a fast turn around, fluent english, and professional.