Thank you for your posting, we have gone through your project description and also the document attached contains wireframes. This app seems really big and we would like to have detailed discussion on this before submitting a proper proposal. We are aware that you have asked us to send separate price and timeline for each phase, but at the time of bid going through the project description and the document attached it is possible to send proposal but that won’t be very effective. If we can communicate and talk together to get the full understanding of the project and then we can make a very official formal proposal for you. Also we can show you our past work and can explain about strength and skills for our company to give you confidence and believe in us for working together. Please let us know and we can revise everything after brief discussion. Thankyou