Phonetic Contacts is a utility app designed for iPhone users, developed by 磊 汪. It focuses on sorting Chinese contacts based on the phonetic alphabet, enabling quick contact search. The app offers features such as adding phonetic fields to contacts for proper English system sorting, support for white lists, and sorting in traditional Chinese, Japanese, and Korean systems. It also corrects multiple pronunciation errors and allows for adding tones. With no network requests, the app ensures the absolute safety of contact data and is fully open-source.

For users, the app provides a URL scheme for execution and rollback actions. To use the app effectively, users can simply run it for sorting purposes or customize settings for quick search functionality, clear added fields, enable multiple pronunciation error correction, and more. Note that Phonetic Contacts is specifically tailored for users with Simplified/Traditional Chinese names in their Contacts.