Two-Way Service Booking App

I want to take an idea for a dual-sided appointment platform and turn it into a polished Android release (iOS later is a plus). The core goal is clear: help users book professional services while giving providers the tools to accept, reschedule, and track those bookings in real time. Both customers and service providers must feel as though the app was tailored specifically for them.

My tentative plan is split into three milestones.
• Concept & wireframes (≈20 %): agree on the feature list, map user flows for both sides of the marketplace, and produce an interactive prototype in Figma or a comparable tool.
• Core development (≈40 %): build the main booking, calendar, notification, and payment modules using a clean architecture in Flutter, React Native, or native Kotlin/Swift—whichever you can execute best—backed by a secure REST / GraphQL API and automated tests.
• Polish & release (≈40 %): full QA pass, performance tuning, store-listing graphics, concise documentation, and final upload to Google Play under my account.

Acceptance criteria:
1. A logged-in customer can browse services, pick a time slot, and receive confirmation.
2. A provider can set availability, accept/decline appointments, and view revenue stats.
3. Push/email notifications fire on every status change.
4. All critical paths are covered by unit and basic UI tests.
5. Build is approved by Google Play without warnings.

Once we lock the exact feature set, we’ll set realistic dates together. If you have experience shipping marketplace or scheduling apps and can own the journey from wireframe to store release, let’s talk.