Set rules: hide caller ID (prefix), block spam and robocalls, manage Dual SIM.
About PaSS: Prefix, Spam Block & SIM
PaSS: Prefix, Spam Block & SIM is a tools app developed by Med 8.
Download Statistics
PaSS: Prefix, Spam Block & SIM has been downloaded 280 times. In the last 30 days, the app was downloaded 54 times.
User Ratings
The app has no ratings yet.
App Information
PaSS: Prefix, Spam Block & SIM is FREE to download. The last update was on March 18, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play March 2026.
Description
You decide who sees your number, which SIM you use, and who can call you.
PaSS patiently waits in the background until you make or receive a call. It then instantly and invisibly executes the exact rules you’ve set up. Fully automatic, but you keep 100% of the control. Everything is processed securely and locally on your own phone.
WHAT CAN YOU CONFIGURE WITH PASS?
📞 Smart Calling (Outgoing) • Hide Caller ID & Anonymous Calls: Create a rule that automatically adds the #31# prefix for specific contacts. Call clients or patients anonymously, but show your number to friends. • Dual SIM Manager: Link contacts or groups to a specific SIM card. Prevent yourself from ever accidentally calling your boss with your private number again. • Auto-Format Numbers: Let PaSS automatically add country codes to copied phone numbers.
🛡️ Spam Blocker & Unwanted Callers (Incoming) Build your own local firewall against robocalls and telemarketers. • Local Spam Lists: Add numbers or entire ranges (using wildcards like +1800*) to your local spam list yourself. Make a rule to block these calls instantly. • Block Anonymous Calls: Set up a rule to automatically reject anonymous or hidden callers. • Call History: Easily see in the app who called and which of your rules was applied.
⚡ Smart Environment Triggers Make your rules adapt to your surroundings: • Calendar: Automatically mute work calls when you have an appointment in your calendar. • Bluetooth: Instantly reject unknown numbers as soon as you connect to your car kit. • Wi-Fi: Set your work SIM as the default when connected to your office Wi-Fi network.
⚙️ HOW DOES THE LOGIC WORK? You build actions using a simple 'If-Then' system: 🔹 IF [Caller is in Spam List] THEN [Block Call] 🔹 IF [Contact = 'Work Account'] THEN [Choose Work SIM]
👥 WHO IS PASS FOR? Perfect for both Single and Dual SIM users! ✅ Professionals who value their privacy (doctors, freelancers, entrepreneurs). ✅ People who want to stop robocalls, telemarketers, and spam. ✅ Dual SIM users who want to keep work and private life strictly separated.
📥 NEED HELP SETTING UP? Read the comprehensive guide at pass-app.com/en/guide. Don't want to build rules from scratch? Download ready-made rules (like a 'Spam Blocker') at pass-app.com/en/examples.
💰 READY TO TAKE CONTROL? Try PaSS for 30 days completely free. No ongoing subscriptions, just a simple one-time purchase. Download today!
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Comments on PaSS: Prefix, Spam Block & SIM for Android
★☆☆☆☆Charles Thompson· Jun 18, 2026
The User Interface seems a bit clunky, and I can't even get past the set-up screens. Side scrolling doesn't work to move between screens (have to use the 'Next' button), it won't create rules (pressing the Orange 'plus' icon does nothing), and the 'Start' button is constantly greyed out. Don't know if it's because it doesn’t support my 'phone, Samsung Galaxy Fold 6, but not impressed with the lack of functionality, and the lack of feedback when stuff doesn't work. Core Permissions WERE granted
Google Play Rankings for PaSS: Prefix, Spam Block & SIM
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Technologies used by PaSS: Prefix, Spam Block & SIM
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
