Redesign of PicPoint Windows Phone app

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This customer received 37 app designs from 9 designers. They chose this app design from cip as the winning design.
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App Design Brief
The App exists, is up and running but the design is not the best (my creation and i am a developer).
Project landing page http://picpoint.eu/
Also the app has live tiles small, medium and large.
The purpose of this is to have a professional design and make this app the best app on the Windows Phone marketplace of his kind.
This app is a picture library that tells you where you've made you're pictures and gives you a unique perspective on the places that you have visited.
If this is successful there will be a version for Windows 8, Android and IOS also.
The app right now is for WP7 and WP8 and because of this the performance is not the best. With this new design the app will be for WP8 only and have the best performance possible.
I am not sure what else should i mention here but i am glad to answer to any questions if you are interested.
I am using Expression design as a design tool and Expression Blend and Visual studio as development tools so if you can provide compatible file the better but is not mandatory.
It wold be nice to keep the existing color palette but again nothing is mandatory I just need a good design.
Links:
App on Marketplace http://www.windowsphone.com/en-us/store/app/picpoint/12e7ccb5-43b6-49a2-af91-de5132c7cfe4
App landing page http://picpoint.eu/
Updates
Project Deadline Extended
Reason: The submission time was extended doe to the request of designers.
Added Wednesday, January 29, 2014
Added Friday, January 31, 2014
Project Deadline Extended
Added Monday, February 03, 2014
Project Deadline Extended
Added Sunday, February 09, 2014
Project Deadline Extended
Added Tuesday, February 11, 2014
Project Deadline Extended
Added Thursday, February 13, 2014
Project Deadline Extended
Added Saturday, February 22, 2014
Target Market(s)
Windows Phone users that travel and make pictures.
Industry/Entity Type
Library
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- Panorama control as the App main page like in the present.
Representation of visited locations , Live tiles, Map, share location and picture..
If the designer comes up with better proposition they will be take in consideration.
None of these are mandatory but we should keep a connection with the present design so the users will not have the impression that this is a totally different app, this is PicPoint but better, more professional.