Privacy Policy · App Lock Pro

CloudEx Inc. ("we", "us", or "our") operates the "App Lock Pro" app (the "Service"). This Privacy Policy explains what information we collect, how we use it, and the choices available to you. By using the Service, you are deemed to have agreed to the practices described in this Policy.

1. Our Core Principle

App Lock Pro asks for your PIN, pattern, password or fingerprint before the apps you choose can be opened. Detecting which app is opened, showing the lock screen, checking your passcode, and — if you turn them on — taking intruder photos and watching for camera and microphone use all run entirely on your device. There is no account and no sign-up, and we never view, collect, upload, or transmit any of the following:

Your passcode, pattern, password, or the answer to your security question
Your fingerprint or face data (fingerprint unlock is handled by Android; the app only learns whether it succeeded)
Intruder photos, or anything captured by the camera
The list of apps you lock, when you opened them, or which apps you use
The history of camera and microphone use, and the list of apps and their permissions
The photo you choose as the lock screen background
Anything on your screen or inside other apps

App Lock Pro does not hide, move, or encrypt your files. Uninstalling the app always removes every lock, and your data in other apps stays as it is.

2. How the Main Features Use Your Device

Detecting the app in front: With usage access, the app reads which app is in the foreground on your device, so that it can show the lock screen over a locked app. It does not read what you do inside that app, and it does not keep a history of the apps you use; the only records it keeps are the access log and the camera and microphone history described below.
Lock screen and passcode: The lock screen is drawn over the locked app. Your passcode and the answer to your security question are stored only as salted hashes (PBKDF2), never as plain text, and are excluded from backups.
Fingerprint and face unlock: These use Android's system prompt. Your biometric data never reaches the app.
Forgot your passcode: You can confirm it is you with your phone's own screen lock (handled by Android) or your security question, and set a new passcode.
Intruder photos (Premium, off by default): If you turn this on and allow the camera, the app takes a photo with the front camera (and, if you choose, the back camera) when someone enters the wrong passcode on the lock screen the number of times you set. It is used only at that moment. Photos are saved inside the app's own storage on your device together with the time and the app that was being opened — never to your gallery and never in backups — up to 60 photos, oldest deleted first. The wrong passcodes that were typed are not saved. On Android 12 and later, the system shows its camera indicator while a photo is taken.
Camera and microphone alerts (Premium, off by default): Android tells apps only that the camera or microphone has started or stopped being used — not what is captured, and not which app is using it. App Lock Pro therefore shows the app that was in the foreground at that moment. It never accesses the camera or microphone feed itself. The history of these events (up to 500 entries) is stored only on your device.
Permission check: The app lists which installed apps can use the camera, microphone, location, contacts, SMS, call log, and photos, using information Android provides on your device. To notify you when an app gains a new permission (Premium), it keeps a copy of the previous list on your device.
Lock screen photo (Premium): When you pick a photo with Android's photo picker, the app saves a reduced copy in its own storage. It does not need, and does not request, access to your photo library.
Uninstall lock (off by default): Locks the screen that confirms uninstalling or installing apps. It does not use device administrator rights.
Icon disguise (Premium): Changes the app's icon and name on your home screen. It does not change any other app.

3. Information We Collect

3.1 Information Collected Automatically

Anonymous crash reports: Via Firebase Crashlytics. When the app crashes, we collect the stack trace, device model, OS version, app version, and a random identifier created for this installation of the app. This does not include personally identifiable information, your passcode, photos, or the apps you lock.
Purchase information: We use purchase tokens issued by Google Play to verify your one-time "Premium" purchase. We never receive any payment information such as credit card numbers.
List of our other apps: To show our other apps, the app downloads their names, descriptions, and icons from our content server (static files hosted on Cloudflare Pages). The request contains no personal data from the app. As with any request to a web server, the server receives your device's IP address as part of the connection. Tapping an app in the list opens its page on Google Play.

App Lock Pro does not use analytics, does not use the advertising ID, and does not send usage statistics.

3.2 Information Stored Only on Your Device

Passcode and security question: Stored as salted hashes, as described in Section 2.
Locked apps and settings: The apps you lock, your modes and schedules, and your settings.
Access log: When each locked app was unlocked and how (passcode, fingerprint, or reset), and when a wrong passcode was entered — up to 500 entries.
Intruder photos, camera and microphone history, the permission list, and your lock screen photo: As described in Section 2.
Android backup: If backup is turned on in your device settings, Android may include the list of locked apps and your settings in the backup it saves to your own Google account, or copy them to a new phone. Your passcode, security question, intruder photos, logs, and lock screen photo are always excluded, so an old passcode can never lock you out of a new phone. This is handled by Android; we have no access to it.
When you uninstall: Uninstalling the app or clearing its data deletes everything listed above.

3.3 Information We Explicitly Do Not Collect

Your passcode, pattern, password, security answer, or biometric data
Intruder photos or anything captured by the camera or microphone
The apps you lock or use, and when you use them
Your location
Your name, email address, phone number, or contacts (the app has no account or sign-up)
The contents of your screen, your messages, or other apps

3.4 Permissions the App Requests and Their Purposes

An app lock needs a few OS permissions. App Lock Pro uses them only for the stated purposes:

Usage access (PACKAGE_USAGE_STATS) — Tells the app which app is in the foreground, so that it can lock the apps you chose. You grant this in the system settings.
Display over other apps (SYSTEM_ALERT_WINDOW) — Shows the lock screen instantly on top of a locked app, and the small dot in the screen corner while the camera or microphone is in use (Premium). It does not read any screen content.
Foreground service (FOREGROUND_SERVICE / special use) — Keeps the lock working in the background. Android requires a notification while it runs; it is shown with the lowest priority.
Notifications (POST_NOTIFICATIONS, Android 13+) — The ongoing notification above, the "Lock all now" button, suggestions to lock newly installed apps, and the camera, microphone, intruder, and new-permission alerts.
Camera (CAMERA) — Requested only when you turn on intruder photos (Premium), and used only at the moment a photo is taken on the lock screen.
Fingerprint and biometrics (USE_BIOMETRIC / USE_FINGERPRINT) — Unlocking with your fingerprint or face through Android's system prompt.
Run at startup (RECEIVE_BOOT_COMPLETED) — Restores the lock after your phone restarts or the app is updated.
Google Play Billing (BILLING) — The one-time Premium purchase.
Internet (INTERNET / ACCESS_NETWORK_STATE) — Used only for anonymous crash reports, Google Play purchase verification, in-app reviews and in-app updates, downloading the list of our other apps, and showing this privacy policy in the app. Locking apps does not require an internet connection.

App Lock Pro does not use accessibility services or location.

4. How We Use Information

The limited information we collect is used only for the following purposes:

Operating and maintaining the Service
Verifying your Premium purchase
Diagnosing and fixing crashes
Responding to support inquiries
Complying with applicable laws

5. Third-Party Services

App Lock Pro uses the following third-party services. Each service has its own privacy policy.

Firebase Crashlytics (Google LLC) — anonymous crash diagnostic data
Google Play Billing (Google LLC) — the one-time Premium purchase; payment is completed on Google Play, and we receive only a purchase token
Google Play In-App Review and In-App Updates (Google LLC) — let you rate the app and install updates without leaving it; handled by Google Play
Cloudflare Pages (Cloudflare, Inc.) — hosts the static list of our other apps

App Lock Pro does not share your data with advertising networks.

6. Data Retention

Crash reports: retained for 90 days, then deleted.
Data on your device: kept until you delete it, uninstall the app, or clear the app's data. Intruder photos are limited to 60, and the access log and the camera and microphone history to 500 entries each; the oldest are deleted first.

7. International Data Transfers

We are based in Japan. The infrastructure used for crash diagnostics and for hosting the list of our other apps may be located in various countries. When you use the Service, the minimal information described above may be processed outside your country of residence under standard contractual safeguards.

8. Your Rights

Depending on where you reside (e.g., the EEA, UK, California, Japan), you may have the right to request access to, correction of, or deletion of the limited information we hold. You can:

Delete intruder photos and clear the logs in the app at any time, or uninstall the app or clear its data to erase everything it stores on your device
Turn off intruder photos and the camera and microphone alerts, or withdraw the camera, usage access, display over other apps, or notification permission in your device settings at any time
Contact us at the address below to make a request regarding the information we hold

9. Children's Privacy

App Lock Pro is not directed to children under the age of 13 (or the minimum age applicable in your region). If we inadvertently collect information from such a child, we will delete it promptly upon being contacted.

10. Changes to This Policy

This Privacy Policy may be updated from time to time. The latest version is always published at this URL together with its effective date. We will also notify you within the app of significant changes as appropriate.

11. Contact

For questions about privacy, data requests, or to report concerns, please email us at .

CloudEx Inc. (Japan)

Effective Date: October 24, 2026