iOS Education App with Yahoo Finance Integration

I'm seeking an experienced iOS app developer to create an educational mobile app with specific features.

Key Requirements:
- User Authentication: The app must integrate with Okta for user authentication.
- Yahoo Finance Integration: The app will need to pull in stock prices from Yahoo Finance.
- Graph Plotting: The app should visualize the stock prices using line charts.

Ideal Skills:
- Proficient in iOS app development.
- Experience with Okta for user authentication.
- Knowledge of Yahoo Finance API.
- Skilled in data visualization and plotting graphs.