iOS Trade App Bug Fix

I'm seeking an experienced iOS developer to fix bugs and inconsistencies in my trade predictor app. The app was built on an app builder site and currently has several issues.

Key Requirements:
- Fix inaccurate predictions
- Disable unnecessary functions
- Activate essential, non-working functions
- Ensure app stability and improve user experience

Ideal Skills and Experience:
- Strong iOS development background
- Experience with bug fixing in trade prediction apps
- Familiarity with app builder platforms
- Excellent problem-solving skills
- Ability to work within budget and meet deadlines
Good English language and communication skills

Please provide examples of similar work.