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 — not just one number at a time. Phone Pattern Blocker uses wildcard patterns to block millions of unwanted calls with a single rule. Enter a pattern like 555-XXX-XXXX and every number in that range goes straight to voicemail. Your phone never rings. How it works: Create a pattern using X as a wildcard digit. The app generates every matching number and registers it with iOS's built-in call blocking. No third-party servers, no call monitoring — just native, silent rejection. Features: - Block by area code, exchange, or custom range with wildcard patterns - Allow list exceptions so important numbers always get through - Support for 195+ countries with international number formats - iCloud backup keeps your patterns synced across all your devices - Quick-start templates for area codes, exchanges, and neighbor spoofing - Import and export your patterns for safekeeping - Browse and preview every number a pattern will block Your contacts always get through. iOS never blocks numbers in your Contacts, even if they match a pattern. 100% on-device. Your patterns stay on your iPhone. The app has no access to your calls, contacts, messages, or call history. Nothing is uploaded anywhere. One price, not a subscription. Other call blockers charge $3–5/month. Phone Pattern Blocker Pro is a single purchase — block up to 1 billion numbers, forever.
CallDam
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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 in-app purchases: CallDam at none against Phone Spam Pattern Blocker's 1. 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.
| Parameter | Phone Spam Pattern Blocker | CallDam |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (218 ratings) — better | — |
| Positive reviews | 42.3% of reviews | — |
| Number of ratings | 218 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone — better | — |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 9 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





