SpamBlocker Extended (Call/SMS/Notification)

3 Downloads 9 Views v6.1 8.01 MB 4.1+

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(8.01 MB)

Editor's Overview

SpamBlocker Extended (Call/SMS/Notification) is a phone & sms application developed by KerballOne, packaged as a single Android APK of version 6.1 weighing in at 8.01 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 8.01 MB, so it installs quickly even on modest connections.
This build is signed by "KerballOne" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

It blocks unwanted calls, SMS messages, and app notifications without replacing your default call/SMS app.
Notification Screening applies your blocking rules to RCS, Signal, WhatsApp, email, and any other messaging app that posts a notification, not just your default SMS app, so spam gets filtered no matter which app it arrives through. Alerts give you a lightweight sound/vibration/flashlight/screen-wake chime for allowed screened notifications, instead of a duplicate full notification.

Filters:
1. Number Rules & Text Rules
2. Contact
3. STIR attestation
4. Repeated call
5. Dialed number
6. Recently used apps
7. Time schedule
8. Notification Screening

Details: https://github.com/KerballOne/SpamBlocker-Extended

Details

Version	v6.1
Size	8.01 MB
Developer	KerballOne
Category	Phone & SMS
Package	dev.kerballone.spamblocker
Android	4.1+
Last Updated	Oct 28, 2026
Downloads	3

Frequently Asked Questions

Is SpamBlocker Extended (Call/SMS/Notification) free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does SpamBlocker Extended (Call/SMS/Notification) require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is SpamBlocker Extended (Call/SMS/Notification) safe to install?
We link to the exact APK published by KerballOne. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update SpamBlocker Extended (Call/SMS/Notification)?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install SpamBlocker Extended (Call/SMS/Notification)

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded dev.kerballone.spamblocker.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «SpamBlocker Extended (Call/SMS/Notification)» by KerballOne and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.