Factors Affecting DApp Development Cost: Blockchain Platform – Ethereum, Binance Smart Chain, Solana, Polygon, etc. Smart Contract Complexity – Simple transactions vs. advanced logic. Frontend & Backend Development – UI/UX, database, API integration. Security & Audits – Smart contract security audits can cost $5,000 – $50,000. Third-Party Integrations – Wallets, oracles, and payment gateways. Maintenance & Upgrades – Ongoing support and updates.