Project: Multi-Platform Tool Hub (Web + iOS + Android) I’m building a vibrant, mobile-first platform that brings together 60+ everyday tools into one place — from finance calculators and unit converters to text utilities and PDF/image tools. I need a complete build: responsive website + matching mobile apps for iOS and Android. At launch, three flagship tools — Calculator, EMI Calculator, and Mortgage Calculator — should deliver instant, ad-free results, even offline. Around them, I’ll add dozens of others (e.g., PDF Converter, Unit Converter, GST Calculator, Percentage Finder, QR Generator, etc.), so the codebase must be modular — new tools can be added easily without rewriting core code. Users should be able to create accounts, log in, and store their data securely in the cloud. Each user gets a personal dashboard with: Saved results and calculation history Favorites and quick access tools Dark/light theme & Hindi/English preference sync Key Requirements: Bright, playful UI/UX with smooth micro-animations. Cross-platform stack (React/Vue for web + Flutter/React Native for apps). Offline-friendly (PWA) with <1s load on 4G. Client-side processing for all tools (WASM/canvas for PDFs, no uploads). Admin/config panel to manage tools and content. SEO-friendly: clean URLs, meta/OG tags, schema (FAQPage + WebPage). Monetization: Ad slots + affiliate blocks (esp. finance tools). Deliverables: Responsive web app + iOS/Android apps (store-ready). User auth + data/history management. Full, documented source code & setup guide. If you can deliver a clean, modular build with top performance and polished design, let’s discuss timeline, milestones, and budget.