New in version 0.5.16-beta
Requires Android 10 or newer. Preserves birthdays without a year and safe extra contact text fields. Adds offline Unsynced Notes recovery and sign-out safeguards. The task-app reminder can be dismissed. Saving a collection after a failed delete no longer deletes it.
Your calendar, contacts, and tasks should stay in sync wherever you work: Android, macOS, Windows, Linux, and the web. SilentSuite keeps that data available across your devices while applying end-to-end encryption before anything leaves your device.
Zero-Knowledge Sync
Encryption and decryption happen on your device, and your keys stay there. The server stores only ciphertext, so it cannot read what you keep on it. This is what zero-knowledge means in practice: the privacy guarantee is a technical constraint, not a policy statement.
Fits Into Every System You Use
On Android, SilentSuite works as a native sync adapter for compatible calendar, contacts, and task apps. On macOS, Windows, and Linux it integrates through a lightweight desktop bridge, so your encrypted data can appear in the tools already built into your workflow. The web app gives you browser access when you are away from your own devices. iPhone support is coming soon.
Open Source And Inspectable
Anyone can read the code, review the encryption, and confirm the privacy claims for themselves. There are no proprietary components to take on trust.
Hosted Or Self-Hosted
Use the hosted service, or run your own server on hardware you control. Your data stays portable: export it at any time in standard formats, with no lock-in.
Beta Note
This is a beta release. Calendar, contacts, and task sync are the focus of this version and form its stable core. Feedback and bug reports are welcome through the link in the app.
What You Need
Requires a SilentSuite account. Self-hosting documentation is available at docs.silentsuite.io.
Donate
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
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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.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
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android.permission.AUTHENTICATE_ACCOUNTS
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find accounts on the device
Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
-
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.
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android.permission.MANAGE_ACCOUNTS
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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 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.
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read the contents of your shared storage
Allows the app to read the contents of your shared storage.
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read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
-
read sync statistics
Allows an app to read the sync stats for an account, including the history of sync events and how much data is synced.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
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add or modify calendar events and send email to guests without owners' knowledge
This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
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modify your contacts
Allows the app to modify the data about your contacts stored on your phone. This permission allows apps to delete contact data.
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modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
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toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
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io.silentsuite.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
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org.dmfs.permission.READ_TASKS
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org.dmfs.permission.WRITE_TASKS
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org.tasks.permission.READ_TASKS
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org.tasks.permission.WRITE_TASKS
Download APK
29 MiB
PGP Signature
|
Build Log
New in version 0.5.15-beta
- Restore contacts that showed in SilentSuite but were missing from your phone's Contacts app, including after an address book was recreated. Local group changes and deletions are kept.
- Explain when a compatible task app needs to be installed for Tasks to sync.
- Make Notes storage safer, so an unfinished write cannot replace a saved note.
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arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 5.0 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.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
android.permission.AUTHENTICATE_ACCOUNTS
-
find accounts on the device
Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
-
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.MANAGE_ACCOUNTS
-
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 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.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
-
read sync statistics
Allows an app to read the sync stats for an account, including the history of sync events and how much data is synced.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
add or modify calendar events and send email to guests without owners' knowledge
This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
-
modify your contacts
Allows the app to modify the data about your contacts stored on your phone. This permission allows apps to delete contact data.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
-
io.silentsuite.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
-
org.dmfs.permission.READ_TASKS
-
org.dmfs.permission.WRITE_TASKS
-
org.tasks.permission.READ_TASKS
-
org.tasks.permission.WRITE_TASKS
Download APK
25 MiB
PGP Signature
|
Build Log
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 5.0 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.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
android.permission.AUTHENTICATE_ACCOUNTS
-
find accounts on the device
Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
-
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.MANAGE_ACCOUNTS
-
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 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.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
read sync settings
Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
-
read sync statistics
Allows an app to read the sync stats for an account, including the history of sync events and how much data is synced.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
add or modify calendar events and send email to guests without owners' knowledge
This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
-
modify your contacts
Allows the app to modify the data about your contacts stored on your phone. This permission allows apps to delete contact data.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
toggle sync on and off
Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.
-
io.silentsuite.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
-
org.dmfs.permission.READ_TASKS
-
org.dmfs.permission.WRITE_TASKS
-
org.tasks.permission.READ_TASKS
-
org.tasks.permission.WRITE_TASKS
Download APK
25 MiB
PGP Signature
|
Build Log
