Develop a 3 tab Android app

develop a simple android application handle contacts, with free and paid versions (free version will be limited to X uses). complete specification will be sent to developer after signing an NDA. required qualifications: - the developer should be experienced with developing applications for the android platform, and have a portfolio of working applications. the developer will be asked to: - submit detailed design and interfaces to be reviewed prior to coding (25% milestone) - submit code and build scripts, and build a beta version (50% milestone) - fix bugs and build a paid version (which we will publish) (75% milestone upon publishing) - complete any refactoring needed and bug fixes after a 1-month beta run (100%) project quality guidelines: - project code should comply with the Android code style guidelines - most of the project's code should be tested with unit tests - general functionality will be tested on diffferent 2.x devices (simple test plan will be provided by us) bonuses: - good work will be rewarded with bonus - achieving milestones on schedule will be rewarded with bonus - if profits from sales double the investment within a year after project completion, the developer will receive a generous bonus. - we have more applications to develop. mutual satisfaction is an opportunity