Spam Fortress - Call Blocker
Android app by River Technologies LLC. Communication · River Technologies LLC
- Store rating
- Unknown
- Store rating count
- Unknown
- Download price
- Free to download
- In-app purchases
- Listed by the store
- Version
- 3.20.2
- Listing last refreshed
- 2026-09-16
View the original store listing
Store description excerpt
Most call blockers make you block spam one number at a time. Spam Fortress blocks by area code instead — stop hundreds of unwanted calls at once, without ever touching your contacts. HOW IT WORKS - Block entire area codes at once — no need to block numbers one by one - Or flip it around: only allow specific area codes through, block everything else - Block individual phone numbers directly - Trusted Callers mode — only your contacts get through, everyone else is blocked - Block calls with no Caller ID (unknown/restricted numbers), with a clear warning about emergency callback considerations before you turn it on - Optional schedule — only block during the hours you choose - Quick Add — instantly add known spam-heavy area codes (toll-free ranges, high-risk international prefixes) to your block list YOUR CONTACTS ARE ALWAYS PROTECTED No matter what mode you're using, people in your contacts always get through. Spam Fortress never blocks someone you actually know. BUILT FOR PRIVACY, NOT DATA COLLECTION - 100% on-device — nothing is ever uploaded, tracked, or sold - No analytics, no ads, no third-party sharing - No account or sign-in required - No access to your call log — screening happens entirely through Android's built-in call-screening system PRO FEATURES - Unlimited blocked numbers and area codes - Extended call history - Custom sound for blocked-call notifications - Back up and restore your block lists to a file - Call statistics dashboard - Priority scheduling and spam-code presets Free tier includes everything you need to get started: 3 blocked area codes, 5 blocked numbers, and 25 entries of call history — no credit card, no trial, no pressure. Spam Fortress blocks unwanted calls the way call-blocking should work: quietly, privately, and entirely under your control.
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