CallShield: Spam Call Blocker

CallShield is your smart call protection app that blocks spam calls, identifies unknown callers, and keeps your phone safe from telemarketers, fraud, and robocalls — all in real-time, right on your device.

Tired of spam calls interrupting your day? CallShield uses a powerful 4-layer detection engine with 200+ spam patterns to block unwanted calls before your phone even rings. Telemarketers, loan scams, insurance fraud, robocalls — CallShield handles them all automatically.

SMART CALL BLOCKING
CallShield runs a 6-layer blocking engine that screens every incoming call. Block telemarketers, fraud calls, and robocalls instantly. Block international and hidden numbers with one tap. Create custom prefix rules to block entire number series. Enable DND mode to only allow calls from your saved contacts.

BLOCK BY CATEGORY
Block calls by spam type with a single tap. Toggle categories like Telemarketing, Loan and Insurance, Spam and Fraud, Promotional, Call Centers, International Scam, and Robocalls. No more blocking numbers one by one — block an entire category at once.

SCHEDULE BLOCKING
Set time-based call rules that work automatically. Create schedules like Night Mode (10 PM to 7 AM, contacts only) or Work Hours (9 AM to 6 PM, whitelist only). Choose your block mode — Contacts only, Whitelist only, or Block all. Pick the days, set the time, and let CallShield handle the rest.

REAL-TIME CALLER ID
See who is calling before you pick up. CallShield shows a floating overlay popup with caller information — spam, telemarketer, business, fraud, or safe caller. Detect the carrier and identify the region for landline numbers. After every call, tap Block or Trust to train your protection.

4-LAYER SPAM ENGINE
Layer 1 — Pattern database with 200+ spam patterns covering telemarketers, toll-free spam, and known scam number ranges across regions. Layer 2 — Community-powered spam reporting from real users worldwide. Layer 3 — Call frequency analysis that detects robocalls automatically. Layer 4 — Smart scoring that combines all layers for accurate detection.

CALL DASHBOARD
Track your protection with real-time stats. See how many calls were blocked, how many were safe, and review your complete call history with spam analysis. Everything in one clean dashboard.

FULL CONTROL
Manage your Blacklist and Whitelist. Create custom blocking rules. Enable Silent block mode so spam calls never make a sound. Block by number series with prefix rules. All your settings sync to the cloud for backup.

PRIVACY FIRST
All call screening happens on your device. CallShield does not upload your contacts to any server. Your data is encrypted and secure. Delete your data anytime from the app.

FREE vs PRO

Free includes basic spam detection, call blocking, call history, community reports, and 3 category blocks.

Pro unlocks everything — DND Mode, International blocking, Silent block mode, Block by series, Schedule blocking, all 7 category blocks, priority support, and no ads. Start with a 7-day free trial.

HOW IT WORKS
1. Install CallShield and sign in
2. Set as default call screener
3. That is it — CallShield blocks spam calls automatically

Download CallShield now and take back control of your phone.

For support: callshieldapp@gmail.com
Website: https://ai-call-shield.web.app

Recent changes:
Improved spam detection accuracy and fixed performance issues.