Complex marketplace apps like Uber require user apps, driver apps, and admin panels. Expect a minimum MVP budget of **$40,000 - $80,000** for a robust build. Anyone quoting $5k is likely using a low-quality template.

For 90% of business apps, **React Native or Flutter** is the right choice. It saves ~30-40% of the budget and allows faster updates. Choose Native only if you need intense graphics (games) or deep hardware integration.

Always ensure your contract states **"Work Made for Hire"**. You should own the Intellectual Property (IP), source code, and design assets upon final payment. Never work with an agency that holds your code hostage.