CallGuard – Spam Blocker
Block Unwanted Calls
Only for iPhone
$4.99 · Designed for iPhone
iPhone
Block unwanted calls with precision. Visual range editor, smart overlap detection, and contact protection — all with complete privacy.
CallGuard is a powerful call blocking app that puts you in control of who can reach you. Using Apple's official Call Directory Extension, CallGuard blocks unwanted calls at the system level — before your phone even rings.
USER-DEFINED BLOCKING
CallGuard does NOT contain any pre-populated block lists or spam databases. YOU decide which numbers to block by creating your own rules. Numbers are only blocked when you explicitly add them — nothing is blocked automatically. You have complete control over the blocking criteria.
KEY FEATURES
• Flexible Blocking Rules — Block calls by exact number, number range, or prefix pattern
• Visual Range Editor — Fine-tune your blocking ranges with intuitive drag controls
• Contact Protection — Automatically whitelist your contacts so they're never blocked
• Smart Overlap Detection — See which rules overlap and exactly how many numbers are blocked
• Capacity Management — Track your usage against Apple's 100K number limit with visual indicators
• Privacy First — All data stays on your device; contacts are processed locally and never uploaded
• Multi-Language Support — Available in English, French, German, Spanish, and Chinese
HOW IT WORKS
CallGuard uses iOS's native Call Directory API to block calls at the system level. Create blocking rules for specific numbers, ranges, or prefixes, and sync them to iOS. When a blocked number calls, iOS silently rejects it before your phone rings.
BLOCKING OPTIONS
• Exact Number — Block a specific phone number
• Range — Block all numbers within a range (e.g., +1 555-100-0000 to +1 555-199-9999)
• Prefix — Block all numbers starting with a prefix (e.g., all +1 555-XXX-XXXX numbers)
VISUAL RANGE EDITOR
Adjust your blocking ranges with precision using our visual editor. Drag handles to expand or shrink ranges, use quick adjustment buttons (+10, +100, +1K), and see real-time feedback on how many numbers will be blocked.
PROTECT YOUR CONTACTS
Enable contact protection to ensure your saved contacts are never accidentally blocked, even if they fall within a blocking range.
SMART CAPACITY MANAGEMENT
Apple limits call blocking to approximately 100,000 numbers per app. CallGuard helps you stay within this limit with:
• Real-time usage tracking with progress bar
• Per-rule limits (max 10,000 numbers per rule)
• Warnings when approaching capacity
• Overlap detection to optimize your rules
PRIVACY & SECURITY
• No account required
• No data uploaded to servers
• All processing happens locally on your device
Download CallGuard today and take back control of your phone calls.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Alexis Creuzot, 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
- Alexis Creuzot
- Size
- 3 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- Languages
English and 4 more
- English, French, German, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Alexis Creuzot
