Mobile App Development Required

I’m looking for a skilled developer to build a brand-new mobile application from the ground up. This is a pure software-development engagement focused specifically on the mobile space, and I’m open to discussing whether we target iOS, Android, or launch on both simultaneously—please outline what you recommend and why.

Here’s what I need:
• End-to-end coding of the app, including a clean, intuitive user interface.
• Integration of any essential APIs or back-end services you feel are necessary for a smooth experience.
• Source code, build instructions, and basic documentation so I can maintain or extend the project later.

If you’ve shipped polished mobile apps before and can guide best practices around performance, security, and store submission, I’d love to work with you. Feel free to share relevant examples and let me know your estimated timeline for a minimum viable build and a full production release.