cSync: Sync Google Contacts,..

**cSync - Making Contact Management Easier**

Have you ever encountered these problems?
- iOS native contacts don't support partial phone number matching
- Too many contacts, difficult to find people
- Contact data cannot be easily backed up and migrated
- Too many duplicate contacts need cleanup
- Want to analyze contact data statistics

cSync is built to solve these problems!

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**Powerful Search Features**

- **Full-field search**: Search not only names, but also phones, emails, companies, positions, notes, addresses, and all other fields
- **Pinyin search**: Quickly find contacts by entering pinyin initials or full pinyin
- **Phone partial matching**: Match any consecutive digits in phone numbers - no need to remember the complete number
- **Smart sorting**: Search results intelligently ranked by relevance, most relevant results first
- **Highlight display**: Search results automatically highlight matched fields and text for easy viewing

**Search Examples:**
- Enter "138" to find all phone numbers containing these three consecutive digits
- Enter "js" to find all contacts whose name pinyin initials are JS (e.g., John Smith)
- Enter "apple" to find contacts with apple in their company name or email

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**Comprehensive Backup Features**

- **Multi-format support**: Export to vCard, CSV, and Excel formats
- **One-tap backup**: Backup all contacts with one tap, ensuring data safety
- **Backup management**: View all historical backups, restore to any version anytime
- **Incremental backup**: Intelligently identify changes, only backup modified contacts
- **iCloud sync**: Backups automatically uploaded to iCloud Drive, sync across devices
- **Backup encryption**: Password protection support for data privacy security
- **Quick sharing**: Share backup files via AirDrop, Email, Messages, and more

**Backup Scenarios:**

- Backup contacts before getting a new phone, import on new device
- Regular backups to prevent data loss
- Export to Excel for editing and management on computer
- Share with family and friends for batch contact import

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**Smart Cleanup Features**

- **Duplicate detection**: Intelligent algorithms detect duplicate and similar contacts
- **Multiple matching modes**:
- Exact match: Same name and phone number
- Smart match: Similar names, same pinyin, overlapping phone numbers
- **Compare preview**: Side-by-side comparison of duplicate