Your apps locked. Your notifications private.
Pick the apps that matter; the lock screen appears the moment one opens. Messages stay hidden in notifications and private files stay encrypted on the device. No account, no data collected.
- No accountNo sign-up, email or login
- No analyticsNo crash-reporting SDK either
- Shows no adsNo ad SDK and no internet permission (this version)
- Unlimited appsNo limit on how many apps you lock
- Encrypted on the deviceAndroid Keystore and AES-GCM
App lock
Locked the moment it opens.
Choose the apps you want to protect. When one opens, Tulphex Lock steps in: PIN, password or pattern, with fingerprint or face only as a shortcut.
- Password managers and authenticators included
- Relock right away, when the screen turns off, or after 30 seconds to 5 minutes
- Forgot the code? Reset it with the recovery code on the device
Notification privacy
The message arrives. The text stays hidden.
Message text is hidden in the notifications of protected apps; show the sender, or only “New message”. Notification text is processed in memory for that decision only and is never stored or sent.
- Choose the hiding mode for each app
- Call, alarm and ongoing notifications are left untouched
Sharing your phone
Guest Mode in one tap.
Start Guest Mode before you hand your phone over; your private apps and notifications are hidden. Kids and Work profiles set the phone up for other situations.
- Settings protection: guests cannot change permissions or uninstall apps
- Recent activity: security events only, never content
Vault and backup
Your private files, encrypted.
Add photos and documents to the vault; they are encrypted on the device with AES-GCM. Save your settings to a backup file encrypted with your own password and move it to a new phone.
- Intruder photo (optional): one front-camera frame after repeated wrong attempts
- Delete all local data in one tap
Common complaints about app locks
Problems that come up often in user reviews, and what Lock does about them. We name no competitors and claim nothing we have not verified.
| Common complaint | Tulphex Lock |
|---|---|
| Ads on the lock screen and over apps | Lock shows no ads; there are never ads on the lock screen or over a protected app. |
| Mandatory accounts and data collection | No account. No analytics or crash-reporting SDK; in measurement the app made no network connection at start. |
| Permissions with no clear reason | The reason for every permission is listed below and in the app. Camera, location and Bluetooth are only requested when you turn on the feature that needs them. |
| Losing settings when changing phones | An encrypted backup file: you choose the password and where it is saved, and it never reaches us. |
Permissions and why
Every permission Lock may ask for, what it is used for and whether it is required.
| Permission | Used for | Status |
|---|---|---|
| Accessibility | Detect which app is in front and show the lock. Only the package name is used; screen content is never read, stored or sent. | Required |
| Notification access | Hide notifications of protected apps in the mode you choose. | For notification hiding |
| Usage access | Also lock apps that hide from accessibility (password managers, authenticators). | Recommended |
| Camera | Intruder photo. | Optional |
| Location | Trusted Wi-Fi name and saved place. Background location is not requested. | Optional |
| Bluetooth | Relax the lock while a trusted device is connected. | Optional |
Privacy in short
The full text is on the policy page, in English and Turkish.
- The developer collects no personal data, uploads nothing to a server and shares nothing with third parties.
- Your lock credentials are never stored in plain text: a PBKDF2 digest is kept encrypted with the Android Keystore.
- Activity history stays on the device for 30 days; events and app names only, never content.
- Settings → Privacy → Delete all local data removes everything permanently. We hold no copy to delete.
Questions about Lock
Does it replace my phone’s screen lock?
No. Lock protects the apps you choose while the phone is unlocked. Keep using your phone’s own screen lock.
What if I forget my code?
Reset it with the recovery code on the device, or with the backup lock method if you set one up. With no account there is no email reset, so keep the recovery code somewhere safe.
Are notifications hidden before they ever appear?
Android hands a notification to the system first; Lock hides it right away, but the first moment or a heads-up pop-up can still show. The Notification hiding page in Lock shows how to turn off pop-ups for protected apps.
Will there be ads?
No. Lock shows no ads and contains no ad SDK; this version has no internet permission either. There are never ads on the lock screen.
Is there an iPhone version?
Not for now; Lock is Android only.
A problem, or an idea?
Send your questions and feedback by email. We read every message.