# Silent Line — Block spam calls silently > Block spam calls silently (iPhone/iPad app by M1 Real Estate Holdings LLC.) - Source: https://appshunter.io/ios/app/silent-line/id6799757378 (this page in markdown: same URL + `.md`) - Developer: [M1 Real Estate Holdings LLC](https://appshunter.io/developer/1886760034) - Category: Utilities, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 18.0 · 20 MB - Languages: American English - Released: 2026-08-31 - Data updated: 2026-11-07 ## What is Silent Line? Your phone should only ring when it’s someone you actually want to talk to. Silent Line blocks spam calls before they can interrupt your day. It works directly with Apple’s built-in call blocking to silently decline matched spam numbers. Your phone won't ring, your music won't stop, and your screen won't light up. READY FROM DAY ONE We’ve pre-loaded Silent Line with the busiest known spam exchanges nationwide, sourced straight from the FTC’s public Do Not Call complaint data. You get bulk spam protection the moment you install the app. YOUR CONTACTS ALWAYS COME FIRST Before applying any block list, Silent Line automatically safely excludes every number saved in your Contacts. You will never accidentally silence a friend, family member, or colleague. THE 'MUST-ANSWER' SAFE LIST Some calls you just can't afford to miss. We built in a permanent, always-on safe list for published numbers from the IRS, Medicare, Social Security, major banks, airlines, and pharmacies. No matter what else you block, these will always ring through. BLOCK ROTATING SCAMS Spammers rarely use the same number twice; they cycle through thousands of numbers in an "exchange" they control. Silent Line lets you block an entire exchange (all 10,000 numbers sharing the same first six digits) so the scammer's next attempt is stopped before they even dial it. STOP "NEIGHBOR SPOOFING" Tired of spammers faking their caller ID to match the first six digits of your own number? Silent Line can shut that down entirely, smartly checking your contacts first to ensure your actual neighbors can still reach you. TWO LEVELS OF PROTECTION You are in control. Set numbers you are certain are spam to be blocked silently. For numbers that are just suspicious, you can let them ring through with a warning label on your screen so you can decide. NUMBER LOOKUP Curious why a call was blocked (or allowed)? Type in any number and see exactly how Silent Line handles it and why. FIX YOUR VOICEMAIL, TOO No app can stop a spammer from leaving a voicemail—only your carrier can do that. Fortunately, every major carrier offers free network-level blocking that usually just needs to be turned on. We include step-by-step setup guides for Verizon, AT&T, T-Mobile, Google Fi, and UScellular. SILENT LINE PRO: SCAM TEXT FILTER Pro sends scam texts from numbers you don't know to your Junk folder: fake toll and delivery notices, loan offers, prize and gift card scams, and fake bank alerts. It works on texts from numbers that aren't in your Contacts. Apple doesn't let any app filter iMessages from Apple IDs. You turn it on once in Settings, Apps, Messages, Unknown & Spam. PRIVATE BY DESIGN There's no account to make, and no analytics or tracking. Nothing you block, allow, or look up is ever uploaded or shared, and the text filter runs entirely on your iPhone. If you buy Pro, Apple and our payment service, RevenueCat, keep an anonymous record of the purchase. LET'S BE HONEST: WHAT WE CANNOT DO Apple caps all call-blocking apps at 2,000,000 numbers and prevents apps from seeing your incoming call history. Because of this privacy rule, Silent Line cannot show you a log of what it blocked, and it won't catch every brand-new spam number on first contact. No app can honestly promise to stop every single spam call. Silent Line is built to be totally transparent about that, while working quietly in the background to stop as many as your iPhone allows. Silent Line Pro is $19.99 a year. It renews automatically unless you cancel at least 24 hours before the end of the current year. Manage or cancel in Settings, your name, Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://playoptix.com/silentline/privacy.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Silent Line Pro | $19.99 | per year | ## Is Silent Line safe? Not enough ratings yet to assess Silent Line. ## Is Silent Line legit? Silent Line appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Silent Line is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.3 — 2026-11-01 New: Silent Line Pro, a filter that sends scam texts from unknown numbers to your Junk folder. Call blocking stays free. ### 1.2.2 — 2026-10-21 A short animated intro when the app opens. ### 1.2.1 — 2026-09-24 Fixes a problem that could stop the block list from rebuilding. As the weekly spam list grows, the total number of entries can reach the limit Apple sets for call blocking apps. When that happened the rebuild stopped instead of trimming, and protection stayed on older data. The app now trims the national list to fit, and your own numbers and exchanges are always kept first. ### 1.2 — 2026-09-17 Silent Line now filters spam text messages too. Turn it on under Settings, Apps, Messages, Unknown & Spam. New app icon and a redesigned, lighter interface. Twice as many known spam numbers are labeled, and the weekly list downloads about six times smaller. Every update now re-imports the latest spam data instead of keeping entries left over from an older version. Setup guide covers iOS 26 Call Screening alongside carrier blocking. Contacts permission is a single Continue step. ### 1.1 — 2026-08-31 No release notes. ## More apps by M1 Real Estate Holdings LLC - [UAP Nexus](https://appshunter.io/ios/app/uap-nexus/id6813150639) - [MetroGnome Garden](https://appshunter.io/ios/app/metrognome-garden/id6813150866) All apps by M1 Real Estate Holdings LLC: https://appshunter.io/developer/1886760034 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-07.*