SpamBlocker (Call & SMS)

Spam Call/SMS blocker

New in version 5.16

Breaking changes:
- API report categories changed, existing settings will be migrated automatically.
- PhoneBlock Token can now be opted out when sharing backups.

Re-backup if necessary.

New:
- Local AI SMS filter (experimental)
- Train your own spam SMS filter by manually classifying some messages.
- Algorithm: Complement Naive Bayes

Fixes:
- API query "formula mode" doesn't work when either positive or negative identifier is empty.
- The 7726 SMS workflow flags replies from 7726 as

It blocks unwanted calls & SMS messages without replacing your default call/SMS app.

Filters:

1. Regex rule for number & SMS content.
2. Contact
3. STIR attestation
4. Repeated call
5. Dialed number
6. Recently used apps
7. Time schedule

Details: https://github.com/aj3423/SpamBlocker

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.

Download F-Droid

Version 5.16 (516) suggested Added on Sep 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.
- 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.
- 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.
- spam.blocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 8 MiB PGP Signature | Build Log

New in version 5.15

Fixes:
- If multiple SMS notifications arrive at the same time, only the last one is displayed
- Wrong history indicator for SMS rules with "particular number" enabled

Improvements:
- A new `Search Online` option in the history context menu, for searching the number using your preferred search engine.
- Manual reports are now saved, so you can close the reporting dialog without waiting for it to finish and review the result later by tapping the cloud icon.

Changes:
- To reorder workflow action

Version 5.15 (515) - Added on Aug 27, 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.
- 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.
- 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.
- spam.blocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 7.9 MiB PGP Signature | Build Log

New in version 5.14

Help Wanted
- Publish to PlayStore under your name
- On-device AI

Check the pinned issues for details:
https://github.com/aj3423/SpamBlocker/issues

Fix:
- Caller ID window crash issue

Improvements:
- Import/Export Regex rules
- Backup/Restore history records
- Repeat the notification for important messages

Changes:
- SMS content logging is enabled by default (if history logging is enabled)

Version 5.14 (514) - Added on Jul 31, 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.
- 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.
- 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.
- spam.blocker.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 7.9 MiB PGP Signature | Build Log

Versions

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