Phone Spam Pattern Blocker vs CallDam
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phone Spam Pattern Blocker
Block unwanted calls by creating custom patterns, like area codes or prefixes, to instantly silence millions of numbers. This app offers a powerful, on-device solution to combat robocalls and scams without subscriptions. Start blocking for free and upgrade for unlimited protection.
- Block calls by area code, exchange, or prefix
- Block millions of numbers with a single pattern
- New blocking engine handles up to 500 million numbers
- One-time purchase for Pro version
- Free tier blocks up to 5 million numbers
- 100% on-device processing for privacy
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Block entire area codes, exchanges, and spoofed number ranges with one pattern, not one number at a time. Phone Pattern Blocker uses wildcard patterns to block huge ranges of unwanted calls with a single rule. Enter a pattern like 555-123-XXXX and every number in that range is blocked: your phone won’t ring, and the caller can still leave a voicemail. OPTIMIZED FOR IPHONE DUO Open your iPhone Duo to see your patterns and the one you’re editing side by side. As you type, the What This Blocks panel shows how many numbers a pattern covers, its range, example numbers, and any overlap with your other patterns. Close it and pick up right where you left off. HOW IT WORKS Create a pattern using X as a wildcard digit. The app registers every matching number with the call blocking built into iOS. There’s no call monitoring: iOS quietly declines matching calls on its own, even when the app isn’t running. FEATURES • Block by area code, exchange, or any custom range • Block neighbor spoofing: calls made to look like your own number • Allow exceptions so the numbers you choose still ring • 200+ countries and regions with local number formats • iCloud keeps your patterns in sync across your devices • Browse every number a pattern will block • Import and export your patterns YOUR CONTACTS ALWAYS RING iOS never blocks a number saved in your Contacts, even if it matches a pattern. PRIVACY Your patterns are processed on your iPhone. The app can’t see your calls, contacts, messages, or call history. Crash and blocking diagnostics are shared with Apparent Logic by default to help fix problems, and you can turn this off any time in About › Privacy & Diagnostics. PRO, NO SUBSCRIPTION Block up to 5 million numbers free. Pro is a one-time purchase that raises your limit to 1 billion numbers, with no subscription.
CallDam
Block unwanted calls efficiently by creating rules based on phone number prefixes. Protect thousands of numbers at once and manage your blocking lists directly from the iPhone share sheet. Your privacy is maintained as all rules stay on your device with no tracking or account required.
- Block calls by phone-number prefix
- Protect large ranges of numbers
- Direct blocking from iPhone share sheet
- Add exact-number exceptions
- Import and export local backups
- Apply block list via iOS Call Blocking
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CallDam is built for mass call blocking by phone-number prefix. Instead of blocking one unwanted number at a time, CallDam lets you create prefix rules that can protect thousands of related numbers at once. The app is designed for large blocking lists, with support for up to 1.8 million active protected numbers. A key feature is direct blocking from the iPhone share flow. When you see an unwanted number or contact, share it to CallDam and create a prefix blocking rule without manually opening the app and rebuilding the rule step by step. Main features: • Block unwanted calls by phone-number prefix • Protect large ranges of related numbers • Support for up to 1.8 million active protected numbers • Add exact-number exceptions for numbers you still want to allow • Pause, resume, edit, or delete rules • Batch-edit multiple rules before applying changes • Add rules directly from the iPhone share sheet • Import and export local JSON backups • Apply your active block list through iOS Call Blocking & Identification Private by design: • No account required • No ads • No subscriptions • No in-app purchases • No tracking • No contact access required • No blocked-number uploads • Your blocking rules stay on your device CallDam prepares your active blocking list locally and applies it through Apple’s iOS Call Blocking & Identification system. Supported prefix-blocking countries and regions: Russia / Kazakhstan (+7), USA / Canada (+1), Armenia (+374), Belarus (+375), Ukraine (+380), Tajikistan (+992), Azerbaijan (+994), Georgia (+995), Kyrgyzstan (+996), Uzbekistan (+998), France (+33), Spain (+34), Poland (+48), Denmark (+45), Norway (+47), Netherlands (+31), Switzerland (+41), India (+91), Iran (+98), Australia (+61), Singapore (+65), Turkey (+90), South Africa (+27), UAE (+971), Saudi Arabia (+966), and Egypt (+20). Important: To block calls, you must enable CallDam manually in iOS Settings: Settings > Apps > Phone > Call Blocking & Identification. CallDam does not collect, upload, sell, or share your blocked numbers.
Screenshots
Verdict
The clearest difference is rating: CallDam at 5.0 against Phone Spam Pattern Blocker's 3.2. CallDam also leads on in-app purchases (none vs 1). Phone Spam Pattern Blocker's advantage is ratings volume (226 vs 3). On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Phone Spam Pattern Blocker sells 1 one-off in-app purchase. CallDam asks for nothing beyond the download.
CallDam holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Phone Spam Pattern Blocker has 226 ratings behind it against 3, so its average is the more settled of the two.
| Parameter | Phone Spam Pattern Blocker | CallDam |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (226 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 226 — better | 3 |
| Update frequency | Fortnightly | — |
| Ads | No | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone — better | — |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 10 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Apparent Logic, LLC | Valentina Prossapchuk |
Bugs and requests
Phone Spam Pattern Blocker
Reported bugs
10 issues- Premium/paid features show payment error despite being purchased
- App freezes and becomes unresponsive
- Blocked numbers still ring through to user
- App blocks all incoming and outgoing calls
- App doesn't appear in iOS Settings > Phone > Call Blocking
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- Contact developer button crashes the app
- App cannot be uninstalled properly
- White screen freeze on launch
- Incompatibility with certain iOS versions and iPhone models
- Glitches with certain number patterns
Requested features
8 requests- Support for 10-digit phone numbers (Vietnam and other countries)
- Ability to whitelist/safelist numbers with same prefix
- SMS/text message blocking capability
- Call blocking log with statistics
- Copy and paste functionality for entering numbers
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- Support for international number formats
- Increase limit on number of patterns that can be blocked
- Better error messages explaining why patterns cannot be blocked
CallDam
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Phone Spam Pattern Blocker
- Phone Pattern Blocker Pro$4.99
CallDam
No in-app purchases
Questions
Is Phone Spam Pattern Blocker free?
Is CallDam free?
Which has better reviews, Phone Spam Pattern Blocker or CallDam?
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