In what situations has your team worked with more than three iOS developers?

In my team, more than three iOS developers have worked on projects with high complexity and scale, where responsibility was divided by functional modules of the application.

For example, when developing a large corporate application:

• One developer was responsible for UI and user interaction,
• Another for server-side integration and networking,
• The third for business logic implementation and database work,
• The fourth for testing and performance optimization.

This distribution allowed parallel work on different parts of the application, speeding up releases and improving code quality through specialization.