I have studied thoroughly your job description; after studying the details, I have definitely understood what you need and I can do web app and mobile app. I have proved myself worthy of their time. I have experience of more than 5 years with this kind of work. I agree with your cost for this particular project and I even can do this in two times less, because I am interesting in long -term projects and that's why by successfully finishing this job, want to show you that I am reliable. I can finish this job quickly and with high quality than any other applicant. If you want to see my work portfolio please inbox me for further discussion about your project.