SpamBlocker Extended (Call/SMS/Notification)

Spam Call/SMS/Notification blocker

New in version 6.2.1

SpamBlocker Extended 6.2.1

Fixes:
- Answer + Hang Up could fail on some devices (e.g. CalyxOS) because the ringing event arrived too late. Reverted the 6.1.5 change, as upstream did in 5.19.
- Calls reported with an unknown direction are now screened and logged instead of being skipped.
- Caller numbers in SIP format (e.g. "sip:+49...@ims...;user=phone") now match rules and contacts.
- A call always gets a screening response, even if screening hits an error.

Improvements:
- An empty spam datab

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

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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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Version 6.2.1 (621) suggested Added on Oct 18, 2026

arm64-v8a armeabi-v7a x86 x86_64

This version requires Android 10 or newer.

It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
- view network connections
  
  Allows the app to view information about network connections such as which networks exist and are connected.
- answer phone calls
  
  Allows the app to answer an incoming phone call.
- take pictures and videos
  
  This app can take pictures and record videos using the camera while the app is in use.
- android.permission.FLASHLIGHT
- run foreground service
  
  Allows the app to make use of foreground services.
- have full network access
  
  Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
- android.permission.PACKAGE_USAGE_STATS
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read call log
  
  This app can read your call history.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- android.permission.READ_LOGS
- read phone status and identity
  
  Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
- read your text messages (SMS or MMS)
  
  This app can read all SMS (text) messages stored on your phone.
- run at startup
  
  Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
- receive text messages (MMS)
  
  Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- receive text messages (SMS)
  
  Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- send and view SMS messages
  
  Allows the app to send SMS messages. This may result in unexpected charges. Malicious apps may cost you money by sending messages without your confirmation.
- This app can appear on top of other apps
  
  This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- modify system settings
  
  Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
- dev.kerballone.spamblocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 8.2 MiB PGP Signature | Build Log

New in version 6.2.0

SpamBlocker Extended 6.2.0

New:
- Contacts and Database now apply to Notifications: phone numbers in a screened app's notification Title or Body are checked against your contacts and the spam database, with no Number Rule needed. "Block non-contacts" can dismiss notifications from unknown senders, e.g. RCS or WhatsApp.
- Contacts (Allow and Block separately) and Database have Calls / SMS / MMS / Title / Body chips to choose what they apply to. All are on by default, except Body for blocking non

Version 6.2.0 (620) - Added on Oct 15, 2026

arm64-v8a armeabi-v7a x86 x86_64

This version requires Android 10 or newer.

It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
- view network connections
  
  Allows the app to view information about network connections such as which networks exist and are connected.
- answer phone calls
  
  Allows the app to answer an incoming phone call.
- take pictures and videos
  
  This app can take pictures and record videos using the camera while the app is in use.
- android.permission.FLASHLIGHT
- run foreground service
  
  Allows the app to make use of foreground services.
- have full network access
  
  Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
- android.permission.PACKAGE_USAGE_STATS
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read call log
  
  This app can read your call history.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- android.permission.READ_LOGS
- read phone status and identity
  
  Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
- read your text messages (SMS or MMS)
  
  This app can read all SMS (text) messages stored on your phone.
- run at startup
  
  Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
- receive text messages (MMS)
  
  Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- receive text messages (SMS)
  
  Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- send and view SMS messages
  
  Allows the app to send SMS messages. This may result in unexpected charges. Malicious apps may cost you money by sending messages without your confirmation.
- This app can appear on top of other apps
  
  This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- modify system settings
  
  Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
- dev.kerballone.spamblocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 8.2 MiB PGP Signature | Build Log

New in version 6.1.5

SpamBlocker Extended 6.1.5

New (from upstream):
- Workflows: "Find Rules" can pick rules from a list instead of typing their descriptions.
- Workflows: "Modify Rules" has a visual rule editor; only the changed fields are saved.

Fixes:
- Answer + Hang Up could be delayed for minutes on some devices.
- A rule with an invalid regex (e.g. from a CSV or workflow import) crashed SMS screening.
- "Ignore Country Code" now also handles numbers without "+", e.g. 12223334444, while keeping local numbers

Version 6.1.5 (615) - Added on Oct 12, 2026

arm64-v8a armeabi-v7a x86 x86_64

This version requires Android 10 or newer.

It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Permissions
- view network connections
  
  Allows the app to view information about network connections such as which networks exist and are connected.
- answer phone calls
  
  Allows the app to answer an incoming phone call.
- take pictures and videos
  
  This app can take pictures and record videos using the camera while the app is in use.
- android.permission.FLASHLIGHT
- run foreground service
  
  Allows the app to make use of foreground services.
- have full network access
  
  Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
- android.permission.PACKAGE_USAGE_STATS
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read call log
  
  This app can read your call history.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- android.permission.READ_LOGS
- read phone status and identity
  
  Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
- read your text messages (SMS or MMS)
  
  This app can read all SMS (text) messages stored on your phone.
- run at startup
  
  Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
- receive text messages (MMS)
  
  Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- receive text messages (SMS)
  
  Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- send and view SMS messages
  
  Allows the app to send SMS messages. This may result in unexpected charges. Malicious apps may cost you money by sending messages without your confirmation.
- This app can appear on top of other apps
  
  This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- modify system settings
  
  Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
- dev.kerballone.spamblocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 8.1 MiB PGP Signature | Build Log

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