I need an end-to-end build for an emotional-support application that will run natively on both iOS and Android. The core experience centres on real-time connection: users must be able to text-chat with a support professional and, when they choose, upgrade seamlessly to voice or video calls by purchasing in-app credits. All communication features have to feel instant, private, and secure. Here is the workflow I have in mind. A user signs in, sees available listeners with their current status, and begins a text conversation. A credit counter should appear unobtrusively, allowing the user to switch to voice or video without leaving the chat screen. Apple and Google in-app purchase SDKs will handle the recharge process, so please allow for storefront integration, receipt validation, and a simple balance wallet. Push notifications, basic profile settings, and a clean mood-inspired interface round out the first release. What I’d like from you is a detailed project proposal that breaks down the phases, tech stack, and estimated timelines so I can judge feasibility at a glance. Feel free to suggest frameworks—whether you prefer Swift/Kotlin, React Native, or Flutter—as long as performance and native UX aren’t compromised. Security, data encryption, and compliance with each store’s policy on mental-health services are non-negotiable, so address those clearly in your plan. Acceptance criteria • Universal deployment to the App Store and Google Play, passing review. • Stable text, voice, and video sessions under average 4G conditions. • In-app purchase flow fully certified by Apple and Google. • GDPR-ready data handling and end-to-end encrypted messaging. • A lightweight admin panel where I can view sessions, manage listeners, and generate basic usage metrics. If this scope matches your expertise, I’ll review your proposal and schedule a quick discovery call to lock in milestones and start dates.