I need a straightforward mobile app—an initial MVP—that covers the essentials for my air-conditioning servicing business and runs smoothly on both iOS and Android. Core goals • Let customers book a service slot in just a few taps and receive an on-screen confirmation. • Provide real-time status updates (“technician on the way,” “job started,” “completed”) so clients can track their appointment. • Collect quick feedback and star ratings after each visit to help us improve. Access & security • Users will sign up and log in exclusively through phone-number verification (OTP). No email or social media logins are required for this first version. What I’m expecting • A clean, brand-aligned UI that works on common screen sizes. • Lightweight backend or Firebase setup to store bookings, status changes, and reviews. • Basic admin panel or straightforward method for my team to: – see new bookings, – update job status, and – read customer feedback. • Source code, build instructions, and a short hand-off walkthrough once the app is running on both stores (TestFlight / internal track is fine for the first demo). Keep the build lean—focus on getting the above features working reliably rather than adding extras at this stage. If things run smoothly, we can discuss push notifications, payment integration, or a more polished UI in a follow-up phase.