Money-Earning Mobile App

I want to launch a mobile-only application that allows users to earn real money in two primary ways: by completing online surveys and by offering or hiring freelancing services. The platform must support both main roles—freelancer and client—so that users can seamlessly switch between posting jobs and taking them.

Core requirements
• Native or cross-platform build for iOS and Android, with clean, modern UI
• Secure email / social sign-up, profile creation, KYC options and wallet balance display
• Survey module: dynamic question sets, timer, automatic payout on completion, survey inventory fed by an easy-to-manage admin panel
• Freelancing module: job posting, bidding, in-app messaging, milestone tracking and escrow-style payments
• Integrated wallet with transaction history and payout to PayPal, bank or UPI
• Real-time notifications (Firebase or similar) for bids, survey availability and payments
• Basic analytics dashboard for me to monitor user growth, revenue and task completion rates

Please outline:
1. Your preferred tech stack and why it fits.
2. A milestone-based timeline from MVP through final release.
3. Previous apps where you implemented payments or marketplace features.

Clean code, clear documentation and a short hand-off session are expected before final sign-off.