Used Mobile Marketplace App

I’m ready to commission a complete Android marketplace that lets people buy and sell used mobile phones with as little friction as possible.

Core experience
• OTP-based login to keep onboarding fast and secure.
• Simple listing flow where a seller enters basic details, uploads photos and publishes instantly.
• Robust search and filter so buyers can quickly narrow results by brand, model, price and location.
• Seller contact handled exclusively through in-app messaging—no email or phone numbers exposed.

Look & feel
The interface should stay minimalist and simple: neutral colours, generous whitespace and intuitive icons that keep the focus on devices, not decoration.

Admin side
I only need one role with full admin access. From a web-based panel I must be able to:
– approve, edit or remove listings
– suspend accounts
– view basic analytics (active users, listings per day, popular search terms)

Deliverables
1. Production-ready Android app (latest stable SDK, written in Kotlin or Flutter).
2. Web admin panel with responsive layout.
3. Full source code, build instructions and one live deployment to my hosting.

When you reply, please attach:
• links to two or three similar apps you’ve shipped,
• a realistic timeline broken into milestones,
• your fixed quotation including post-launch support period.

I’m looking forward to working with someone who can keep the UI uncluttered while nailing the essential marketplace features.