Greetings sir,
I have read your project description and we're offering our services to see the project through.
Free Demos are our good practice, and we can offer one as to display quality of our work, and should you find it satisfying we can proceed with our work.
As for our expertise, we are team of 15 European PHP experts / Windows /Web / iOS / Android developers, all experienced in their field of work. Quality is our main goal, for the purpose of being team of choice for our employers should they need any IT work done again.
If you have any questions please do not hesitate to contact us.