Dear Prospect Hiring Manager.
Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned
"I can do this job and give you an efficient job that will be very acceptable and presentable. I and my team work on web development and mobile apps and I can assure you that you will never be disappointed"
Entre em contato comigo. Me informe mais detalhes sobre o projeto. Acho que posso te ajudar. Faço desde o design do aplicativo até a publicação na Google Play.