Develop An Application for Study (Compatible with Android, iPhones, iPads, Windows PCs)

Hello All, Please read the descriptions first and then bid your amount, because your bid amount will be considered your final word for doing this project. THe discussion in chat will be only related to work and features. no negotiations will be made in chat related to increasing price, because my budget is very limited. I need a developer to make a study related software which must be compatible with Android, Apple and Windows PC devices. So, i mean you must use Xamrin or any other software which must give us a compatible version via which we can easily extract our required build for any device easily. The sample software is already attached but to download, install and open this sample software, please change the date of your laptop to 10 Oct 2014, otherwise it'll not be opened because it's an old software. Please note that, I want you to give me a software which must have below mentioned features of the sample attached software; 1. Browse LOS 2. Test Management 3. Browse Questions 4. Exam Review 5. Contact Us I’d like to work with the person, who not only can develop this app but also suggest me something to restrict user from sharing it with friends without downloading it from store. I needed this app to be secured and must be used by user on his own. I’ll discuss the security options of this app with the awarded freelancer for this work. I already posted the amount I can pay for this work, so bid seriously and I want you to done this job in 15 days. The developer must have the experience to use the database with it.