Prefixly - Block Spam Calls
Block spam calls by prefix
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Prefixly blocks spam, telemarketing, and scam calls from unknown numbers — by prefix, so a single entry can silence thousands of numbers at once.
Most spam campaigns dial from blocks of consecutive numbers that share the same opening digits. Instead of blocking them one by one, Prefixly lets you block an entire range with one short prefix.
HOW IT WORKS
• Choose country prefix e.g. +91. Enter the digits after +91. A full 10-digit number blocks just that caller; a shorter prefix blocks every number that starts with it.
• Example: the prefix "7713105" blocks +91 7713105000 through +91 7713105999 — 1,000 numbers in a single tap.
• CallShield registers these with iOS so matching calls are silenced automatically, and an optional label (like "Spam") shows on the incoming call screen.
FEATURES
• Block by prefix — one short prefix covers thousands of numbers
• Custom labels shown on the incoming call screen
• Toggle prefixes on or off without deleting them
• Live capacity and protection-status indicators
• 100% on-device — your block list never leaves your iPhone
PRIVACY
Prefixly collects no personal data and has no accounts, ads, or trackers. Your block list is stored only on your device.
SETUP
After installing, enable Prefixly under Settings → Phone → Call Blocking & Identification. The app walks you through it.
Prefixly uses Apple's CallKit Call Directory and works on iPhone with iOS 17 or later. It cannot block numbers you haven't added, and it does not access your call history or contacts.
Ratings & Reviews
A fresh new name and look! Prefixly blocks spam, scam, and telemarketing calls by number prefix — entirely on your iPhone, with no accounts and no tracking.
The developer, Bhuvan Kumar Gupta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Bhuvan Kumar Gupta
- Size
- 1.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Prefixly