A privacy-focused contact management tool that standardizes phone numbers across your address book—no cloud, no data collection, just local processing.
What It Does
cleanUpPhoneNumbers transforms your contacts’ phone numbers into the international E.164 format—the universal standard that ensures your numbers work seamlessly whether you’re calling from Paris, New York, or São Paulo. The app adds the “+” prefix and proper country codes, converting local formats like “06 12 34 56 78” into “+33 6 12 34 56 78”.
Born from personal necessity and refined over years of real-world use, this utility solves a surprisingly common problem: phone numbers that only work in their country of origin. If you travel internationally, manage contacts across multiple countries, or simply value clean, standardized data, this app delivers exactly what you need—nothing more, nothing less.
Privacy by Design
Your contacts never leave your device. Period. All processing happens locally on your iPhone, iPad, or Mac. No cloud sync, no external servers, no analytics, no tracking. We don’t collect data because we never see your data in the first place.
How to Use
The interface is deliberately minimal—functionality over decoration:
- Country Selection: Choose the default country code to apply to numbers lacking international prefixes. The app intelligently pre-selects based on your system language, but you can override this for any of the 200+ supported countries.
- Group Filtering: Process your entire address book or select specific contact groups. Particularly useful when you have contacts spanning multiple countries, each requiring different default codes.
- Smart Processing: Numbers already in international format are validated and cleaned (adding the “+” if missing). Local numbers receive the appropriate country code based on your selection.
- Undo Capability: Full operation history with comprehensive undo functionality lets you revert changes if needed.
Technical Details
Built as a Universal app using SwiftUI, cleanUpPhoneNumbers runs natively on iOS 17+, iPadOS 17+, and macOS 14+ with full optimization for Apple Silicon. The app has a comprehensive international phone number validation, supporting country-specific formatting rules and edge cases across all regions.
Who It’s For
- Frequent travelers who need reliable international calling
- Business professionals managing global contact lists
- Anyone who’s switched countries and needs to update their address book
- Privacy-conscious users who want local-only contact management
- People who simply appreciate clean, standardized data
Download
Available now on the Apple App Store for iPhone, iPad, and Mac.
No data collection. No subscriptions. No in-app purchases. Just a straightforward tool that does one thing exceptionally well.
