Frequently Asked Questions
Find answers to common questions about PLocker's security, features, and usage
General Questions
Everything you need to know about PLocker as a password manager
PLocker is a free, offline password manager built exclusively for Android devices. It securely stores your passwords, notes, and sensitive information using AES-256 military-grade encryption, keeping everything locally on your device. Unlike cloud-based password managers, PLocker never transmits your data anywhere, giving you complete privacy and control.
Yes, PLocker is completely free with no strings attached. There are no subscriptions, no premium tiers, no in-app purchases, and no hidden fees. We believe that strong digital security should be accessible to everyone without any cost barrier.
PLocker is designed from the ground up as a 100% offline password manager. It does not request internet permissions and has no network code whatsoever. You can create, view, edit, and manage all your passwords completely offline, anytime and anywhere.
PLocker is currently available exclusively for Android devices running Android 7.0 (Nougat) or higher. The app is optimized for both smartphones and tablets, ensuring a consistent experience across different screen sizes and Android versions.
No, PLocker does not require an internet connection at any point. The app does not even request the INTERNET permission. All encryption, decryption, and database operations happen locally on your device, ensuring full functionality regardless of connectivity.
PLocker's source code is publicly available on GitHub for transparency and community review. This open approach allows security researchers and users to independently verify the encryption implementation and confirm that no data leaves the device.
PLocker is fundamentally different because it is 100% offline by design. While most password managers like LastPass, Bitwarden, and 1Password rely on cloud servers to sync your data, PLocker has absolutely no network code. Your encrypted database exists only on your device, eliminating cloud breach risks, unauthorized server access, and third-party data leaks.
No, PLocker is completely ad-free and will always remain ad-free. Displaying advertisements would compromise the clean user experience and potentially introduce privacy risks through ad networks, which goes against PLocker's core privacy-first philosophy.
PLocker does not automatically sync across devices, by design. However, you can manually transfer your data by creating an encrypted backup on one device and restoring it on another using the Backup & Restore feature. The encrypted backup file can be transferred via USB, local file sharing, or any manual method you prefer.
PLocker requests only minimal, essential permissions: biometric sensor access for fingerprint unlock, local storage access for creating and restoring backup files, and clipboard access for copying passwords. Critically, PLocker does NOT request internet, network, camera, contacts, location, or any other privacy-invasive permissions.
Security & Encryption
Understanding how PLocker protects your sensitive data
PLocker uses AES-256 (Advanced Encryption Standard with 256-bit keys) encryption, which is the gold standard for data security worldwide. This is the same encryption algorithm trusted by the U.S. government, NATO, and global financial institutions to protect classified and sensitive information.
Yes, AES-256 is widely considered unbreakable with current and foreseeable technology. It offers 2^256 possible key combinations, which is an astronomically large number. Even with all of the world's computing power combined, brute-forcing a single AES-256 key would take billions of years, making it effectively impossible to crack.
No, PLocker does not sync to any cloud service whatsoever. There are no PLocker servers to connect to. Your encrypted database is stored exclusively in a local SQLite file on your Android device, ensuring that no third party can ever access your passwords through a server breach or unauthorized API call.
PLocker's offline architecture makes it remote hacking and cloud-based attacks immune. Without internet connectivity, there are no servers to breach, no APIs to exploit, and no network vectors for hackers to access your data. The only way someone could access your vault is through physical possession of your device combined with knowledge of your master password.
No, PLocker has absolutely zero tracking, analytics, or telemetry of any kind. The app does not collect or transmit usage data, behavioral patterns, feature usage statistics, or diagnostic information. Your activity within the app is entirely private and known only to you.
No, PLocker does not collect any personal data whatsoever. We don't have servers to collect data on. The app stores your vault exclusively on your device. There are no crash reports, no usage analytics, and no user profiling. The only data in the app is the data you create and store yourself.
All your password data is stored in an encrypted SQLite database file located in PLocker's private app storage on your Android device. This database is encrypted with AES-256 using a key derived from your master password via PBKDF2. Nothing is ever sent to external servers or third-party services.
Physical possession of your phone alone is not enough to access your passwords. An attacker would still need your master password to decrypt the AES-256 encrypted database. Additionally, if you have enabled biometric authentication, the vault remains locked behind fingerprint verification. The encrypted database file is cryptographically useless without the correct credentials.
Features & Usage
Making the most of PLocker's capabilities
Yes, PLocker includes a powerful built-in password generator. You can customize the length from 8 to 64 characters and toggle uppercase letters, lowercase letters, numbers, and special characters. A real-time color-coded strength meter provides visual feedback, and all passwords are generated using a cryptographically secure entropy source.
Yes, PLocker supports fingerprint authentication through the Android Biometric API. This provides sub-second vault unlocking while maintaining full security. Your fingerprint data is processed at the operating system level and never leaves your device. Master password authentication remains available as a secure fallback option.
Navigate to the Backup section in PLocker's settings menu and tap Create Backup. The app generates a fully encrypted backup file containing your entire vault—passwords, notes, categories, and all settings—saved to your device's local storage. Each backup is protected with your master password encryption.
Open PLocker settings, select Restore, and choose your encrypted backup file from local storage. Enter your master password to verify and decrypt the backup. All your previously saved passwords, notes, categories, and settings will be restored exactly as they were at the time of backup.
Yes, PLocker features a fully designed dark theme with proper contrast ratios and visually comfortable color palettes. You can choose between Light, Dark, and System Default modes. In System Default mode, PLocker automatically switches themes based on your device's system-wide theme setting.
Yes, PLocker provides a robust organizational system with customizable categories and folders. You can group your passwords by purpose—such as Work, Personal, Finance, Social Media, and Entertainment—making it easy to locate specific credentials. A powerful search function also lets you find any password instantly.
PLocker currently supports clipboard-based copy and paste for transferring usernames and passwords into login forms. Full integration with the Android Autofill Framework, which would enable automatic form detection and filling, is in active development for a future update.
Troubleshooting
Solutions for common issues and concerns
If you have been creating regular encrypted backups and storing them externally—on a PC, USB drive, or secondary device—you can restore your entire vault on a new Android device using the Restore feature. Without a backup, password recovery is not possible because PLocker has no cloud storage. This is why we strongly recommend creating backups regularly and storing them safely.
Your master password is the sole key to decrypting your vault and is never stored anywhere by PLocker. There is no password recovery mechanism, password hint, or backdoor—this is by design to ensure maximum security. Choose a memorable yet strong master password, and consider writing it down and storing it in a physically secure location like a safe.
Yes, you can change your master password at any time from the PLocker settings menu. When you update your master password, the entire vault is re-encrypted with the new key. Note that any backup files created before the password change will still be encrypted with the old password, so you may want to create a fresh backup after changing it.
You can report bugs through the GitHub repository's Issues page for public tracking, or by reaching out via the Contact page on the PLocker website. When reporting a bug, please include your Android version, device model, app version, and a clear description of the issue with steps to reproduce it. This helps us resolve problems quickly.
If you installed PLocker from Google Play Store, updates are delivered automatically through the Play Store. If you installed via APK, visit the Download page on the PLocker website to get the latest APK version and install it directly. Your encrypted vault data is preserved across updates, so updating never affects your saved passwords.
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