Developing mobile apps if you hire a company to develop the mobile app can cost from $50,000.00 to $100,000.00 for a smaller company to develop the mobile app.
Larger company that develop mobile apps can charge as much as $500,000.00 to $1,000,000.00
If you can learn to develop the app yourself then it can be done much cheaper but it takes some learning and hard work to develop the apps.
You can also try hiring a freelance app developer which is sometimes cheaper and can cost $1,000.00 or less for the mobile app development.
Freelance app developers charge from $20.00 to $100.00 per hour.