Hello, Sir! I saw your job description carefully and I understand your requirements clearly.
By the way, I think the iPhone version is impossible. It can send SMS, but it can't receive SMS. App doesn't allow it. Only native Messaging can receive messages. It's REALLY IMPOSSIBLE for iPhone version, but Android version is possible. If you hire me, I can make only Android version.
I am a passionate mobile developer with 5+ years rich experience. Before felling in love with mobile apps, I had worked extensively with objectiveC, XCode, Java, C++ to have a strong grip on OOP and design patterns. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. your project is one of my favorite and high quality I can provide quick and quality result within your budget. My communication and working time will be flexible to meet your requirement. I will do my best in order to realize your ideas into life.
I hope to good news from you,
Thanks for your consideration,
Best Regards,