Sign In Options
Kafka provides three ways to use the app:Google Sign In
Quick sign-in using your Google account. Automatic authentication with no password to remember.
Email & Password
Create an account with your email address and a secure password you choose.
Anonymous Use
Use the app without signing in. All features work, but data stays on your device only.
Why Sign In?
Creating an account unlocks syncing features:Benefits of Signing In
- Sync favorites - Access your favorite items on all devices
- Resume anywhere - Reading positions sync across devices
- Preserve history - Recent items available everywhere
- Backup data - Never lose your library if you change devices
- Recommendations - Get personalized suggestions based on your reading
Anonymous Mode
You can use Kafka without signing in:- All reading and listening features work
- Downloads work normally
- Data stored locally on device only
- No syncing across devices
- Data lost if app is uninstalled
You can sign in later without losing data. Your local favorites and history will merge with your cloud account.
Signing In with Google
The fastest way to get started:Google Sign-In Security
- Uses OAuth 2.0 for secure authentication
- Kafka never sees your Google password
- Only basic profile information is accessed
- You can revoke access anytime from Google account settings
Creating an Email Account
Sign up with email and password:Create password
Enter a secure password. Requirements:
- At least 6 characters
- Combination of letters and numbers recommended
Email Requirements
- Must be a valid email address
- Each email can only be used once
- Used for password resets and account recovery
- Not shared with third parties
Keep your password safe: Store your password in a password manager or somewhere secure. You’ll need it to sign in on other devices.
Signing In with Email
Return to your account on any device:Forgot Password
If you can’t remember your password:Account Management
Manage your Kafka account:Viewing Account Information
Signing Out
Log out of your account:Signing out doesn’t delete your account or cloud data. Your favorites and progress remain saved in the cloud.
Switching Accounts
Switch between different accounts:Data Syncing
Understand how your data syncs:What Syncs
When signed in, these items sync automatically:Favorites
All items you’ve favorited appear on all signed-in devices.
Reading Progress
Current page/position for each item syncs across devices.
Recent Items
Your reading history stays consistent everywhere.
Preferences
Some app preferences sync (like reader settings).
What Doesn’t Sync
- Downloaded files - Downloads are device-specific
- Download location - Each device has its own setting
- Recent searches - Search history is local only
- Playback queue - Audio queues don’t sync
Sync Timing
- Automatic - Syncing happens in the background
- Immediate - Changes upload within seconds
- On launch - Full sync when you open the app
- Requires internet - Syncing needs an active connection
Privacy and Security
Your data is protected:Data Protection
- Encrypted transmission - All data sent securely over HTTPS
- Secure storage - Cloud data stored with industry-standard encryption
- No data selling - Your information is never sold to third parties
- Minimal collection - Only email and usage data collected
Privacy Controls
- Delete account - Contact support to delete your account and all data
- Export data - Request a copy of your data anytime
- Revoke access - Remove Google sign-in access from Google account settings
Read the full privacy policy at kafka.app/privacy for complete details on data handling.
Troubleshooting Sign-In
Resolve common authentication issues:Can’t Sign In
Wrong Password
- Use “Forgot password” to reset
- Check for typos
- Try typing password in notes app first
- Ensure CAPS LOCK is off
Google Sign-In Fails
- Check Google Play Services is updated
- Try selecting account again
- Sign out of Google and back in
- Verify internet connection
Account Not Found
- Verify email address is correct
- Check if you signed up with Google instead
- Try alternate email addresses
- Create new account if needed
Email Not Verified
- Check email inbox and spam
- Request new verification email
- Wait a few minutes and try again
- Ensure email address is correct
Syncing Issues
If your data isn’t syncing:- Verify sign-in - Ensure you’re signed into the same account on all devices
- Check internet - Syncing requires active internet connection
- Force sync - Pull to refresh on Library page
- Sign out and in - Try signing out and back in to force sync
- Wait a moment - Give sync a few seconds to complete
Best Practices
Get the most from Kafka authentication:- Sign in early - Create an account when you first start using Kafka to enable syncing from the beginning
- Use strong passwords - If using email signup, choose a secure, unique password
- Keep email current - Use an email address you regularly check for recovery
- Sign in on all devices - Use the same account on all your devices to keep everything in sync
- Stay signed in - No need to sign out unless sharing your device
Recommended: Google Sign-In
For most users, Google Sign-In provides the best experience: it’s quick, secure, and doesn’t require remembering another password.