I’m building a full-scale online store to sell physical products and I need the entire buying journey to feel smooth on web, iOS, and Android. The core of the job is a modern eCommerce website tied to native (or high-performance cross-platform) mobile apps that share one backend, inventory, and customer database. Key experience I want for my shoppers • Reviews & Ratings – every product page should accept star ratings, written feedback, and display aggregated scores in real time. • Wishlists – logged-in users must be able to save items, synchronised across devices. • Live Chat Support – an always-visible help icon that launches chat (Zendesk, Intercom, or a comparable SDK) so customers can reach staff instantly. Beyond those essentials, the site and apps should include secure checkout, multiple payment gateways, shipment tracking, push notifications, basic CMS for banners and promotions, and analytics hooks (Google Analytics or Firebase). Clean, responsive UI, fast page loads, and rock-solid code quality are non-negotiable. Deliverables 1. Production-ready website with admin dashboard 2. iOS app published to the App Store 3. Android app published to Google Play 4. Full source code, build scripts, and deployment documentation 5. Brief hand-over session so my team can manage products, orders, and support tools on our own I’m open on the tech stack—Shopify, Magento, WooCommerce with React Native, Flutter, or fully custom—as long as it meets the feature list above, scales easily, and stays maintainable. When you reply, please outline the stack you’d pick, any similar stores you’ve launched, and an estimated timeline with milestones for each deliverable.