Solar Cleaning Booking App

I’m ready to turn my home-solar cleaning service into a smooth, mobile-first experience. The goal is an iOS and Android app where customers can quickly find our technicians, pick a time, pay, and receive confirmation—all in a clean, straightforward interface.

Core flow
• New and returning customers create an account or sign in (email, Apple, Google).
• A Google-Maps powered address picker confirms the exact rooftop location.
• The live calendar shows only the slots we truly have available; once chosen, that slot locks automatically.
• Checkout happens inside the app through PayPal or Stripe, followed by an on-screen receipt plus email/SMS confirmation.

Look & feel
I lean toward a simple, minimalist UI—white space, clear typography, just enough color for calls-to-action. If you already have a favorite component library that supports this style, mention it.

Tech notes
– Native, React Native or Flutter are all fine as long as the final builds pass App Store and Play Store review.
– Calendar can sync to a central Google Calendar or a custom backend—happy to discuss what’s fastest.
– Notifications may run through Firebase or a comparable service; reliability is more important than brand.

Deliverables
1. Source code with clear README and environment setup instructions.
2. Two store-ready builds (iOS & Android) plus guidance for first submission.
3. Admin-side endpoints or lightweight dashboard to add/modify time slots.
4. One round of post-launch bug fixes (within 30 days).

If this matches your skill set and you’ve shipped booking or field-service apps before, tell me how you would structure the project and an estimated timeline.