What official certificates and credentials can confirm your professional skills?

To confirm professional skills in iOS development, there are official certificates that can increase trust from employers and clients:

• Apple Certified iOS Technician (ACiT) — a certificate confirming knowledge in repairing and servicing Apple devices, useful for technical specialists.
• Apple Developer Certification — although Apple does not offer official certificates for developers, completing courses and obtaining certificates from reputable platforms (e.g., Udemy, Coursera) in Swift and iOS development can serve as proof of skills.

Additionally, participation in the Apple Developer Program and having published applications on the App Store also serve as proof of professionalism.