Greetings sir,
We've read you project description and we're interested in the project.
We do need to go over the project in terms of specification and requests, feature description, etc.. to make sure it is done completely as you have envisioned it. There is also design related work to make sure you find it most appealing.
Do bare in mind that possible time frame and even fee could variate depending on the complexity of the task.
Free demos are our good practice, so we could offer a one. It would help you, in your review to help reassure you in quality of the product we offer.
As for our expertise, we are team of 17 European PHP experts /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.