Crypto Trading Mobile App Development

Hi, Mujhe ek crypto trading app banwani hai, jaisa neeche describe kiya hai. Please poora scope review karke mujhe detailed cost + timeline bhej dein. Overview: Ek non-custodial crypto trading app — Spot trading (DEX-based) + Perpetual futures trading, aur ek built-in self-custodial wallet bhi ho — user ko alag se koi wallet app use nahi karni pade. Backend: Node.js server (Railway ya kisi bhi hosting pe) Blockchain reads ke liye JSON-RPC proxy (multi-chain, node failover ke saath) Block-explorer API se transaction history Perp exchange integration (order place karna, positions dekhna, cancel karna — agent-wallet model, sirf trade permission, withdraw ka access nahi) Background jobs (transfer status check karna, fee-rate poll karna) Email-based login/auth (Privy ya kuch similar) Blockchain / Web3 integrations: BNB Smart Chain + Arbitrum (EVM) support DEX integration market orders ke liye (jaise PancakeSwap router) Off-chain signed limit orders (CoW Protocol jaisa kuch, EIP-712) Hyperliquid perpetuals integration (ya koi similar perp DEX) Gasless transactions — ERC-4337 smart accounts, gas ERC20 token se pay ho (native coin nahi) — Pimlico jaisa provider Cross-chain bridging deposit/withdraw ke liye (Across Protocol jaisa) Frontend: Single-page mobile-first web app (dark mode + light mode, dono fully separate) Spot trading screen: live prices, buy/sell, ~25+ pinned coins Perp trading screen: leverage slider, margin/position size calculator, liquidation price estimate, positions/open orders/trade history/order history ke tabs In-app wallet: multi-chain balances, deposit, withdraw, spot/futures ke beech transfer Swipeable tabs, percent-of-balance slider, coin picker with search Abhi tak nahi bana (yeh bhi alag se quote kar dein agar possible ho): KYC / identity verification flow Admin panel with audit logs aur reporting/export Deposit caps / user limits (per-user + total) Email/SMS notification system User onboarding assessment (suitability check) Price-deviation guard + trade audit logging Mujhe aapse chahiye: Cost breakdown: Backend / Blockchain integrations / Frontend-UI / Testing / Deployment Fixed price dete hain ya hourly — dono ka estimate bhej dein Timeline (weeks mein) — MVP (Spot + Perp + Wallet) vs full scope (upar wale "abhi tak nahi bana" items sameet) Aapka past experience DeFi/DEX integrations ya Hyperliquid ke sath (portfolio links agar hain) Launch ke baad maintenance/support ka cost Quote ka wait rahega.