UV Scanner does not sell, rent, broker or monetise your scanned barcode payloads or your personal data. Everything listed below is collected only to run the app, keep it secure, and process the scans you explicitly ask us to save.

01. DATA WE COLLECT

What we collect and why

• Google account email address — used as your sign-in identity, to link your scans, scan credits and purchases to one account, and to power the in-app support chat.
• Device identifier — a stable per-install Android ID (or the iOS vendor identifier on iPhone). We use it to stop one account being abused across many devices, to enforce scan limits, and to ban abusive devices. It is not used for advertising tracking.
• IP address — recorded server-side on each request for rate limiting, fraud prevention and ban enforcement.
• App version, platform and launch events — sent when the app opens or resumes so we can see compatibility problems and active usage.
• Scanned codes (QR / barcode payloads) — only the scans you choose to save or sync. Deleting a scan or deleting your account removes them.
• Purchase records — Google Play order IDs, product IDs and purchase tokens, used to credit scan packs and to verify receipts.
• Push token — a Firebase Cloud Messaging token so we can send you admin broadcasts and support replies. You can turn notifications off in Android settings.
• Support chat messages and photos — anything you send to the in-app support desk, including photos you attach. A short notification with your email and message is also forwarded to our staff Telegram so they see it quickly.
• Crash reports — automatic crash diagnostics from Firebase Crashlytics, tagged with your email and device ID so we can trace and fix faults.

02. PERMISSIONS

Camera, photos and microphone

Camera is required to scan QR codes and barcodes. Camera frames are analysed entirely on your device by an on-device ML decoder and are never uploaded. Frames are discarded immediately after decoding.

Photos / storage is used only when you tap “scan from gallery” or attach a photo to a support message. Nothing in your gallery is read otherwise, and no gallery content is uploaded except the single image you personally pick.

03. ON-DEVICE STORAGE

What stays on your phone

Scans, scan counts, theme choice, language choice, ad preferences and your device ID are also kept locally in the app’s private database and in Android SharedPreferences. This local copy is what lets the app work offline. Clearing the app’s data or uninstalling removes it.

04. GOOGLE SERVICES

Third-party services we use

UV Scanner is built on Google’s platform services. Each of them has its own privacy policy:

• Firebase Authentication & Google Sign-In — signs you in with your Google account. Google Privacy Policy
• Cloud Firestore — stores your synced scans, your account status and your support chat thread.
• Firebase Cloud Messaging — delivers admin broadcasts and support replies.
• Firebase Crashlytics — collects crash and non-fatal error reports.
• Google AdMob — serves the banner, interstitial and rewarded ads that fund the free tier. How Google uses data in ads
• Google Play Billing — processes in-app purchases. We never see or store your card or payment details; Google handles the entire payment.

05. ADVERTISING

Ads

The free tier is funded by ads served by Google AdMob. AdMob may use your advertising ID and device characteristics to personalise the ads you see. You can reset or opt out of personalised ads in your Android system settings (Settings → Privacy → Ads). Rewarding you with scan credits for watching a rewarded ad requires AdMob to register that the ad was viewed.

We do not sell your data to advertisers, and we do not share your scanned codes with any ad network.

06. RETENTION & DELETION

How long we keep it

Scans and account records are kept while your account is active. You can delete individual scans from the app at any time. You can also delete your whole account from Profile → Delete Account, which sends a deletion request; on fulfilment your scans, chat history and purchase links are purged from our systems within 30 days, and the account is removed from Firebase Authentication.

Security logs (IP address, device identifier and blacklist entries) may be retained longer where needed to prevent a known-abusive device or network from immediately returning, as required for fraud prevention.

07. SECURITY

How it is protected

All traffic between the app and qr.mruvd.com travels over HTTPS. Scans and account data are stored in a database that is not publicly reachable, and admin access to that database is behind a separate authenticated panel.

08. CHILDREN

Age requirement

UV Scanner is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal data, contact us through the in-app support desk and we will remove it.

09. YOUR CHOICES

What you control

• Turn camera permission off in system settings — the scanner will not work, nothing else breaks.
• Turn notifications off in system settings to stop all pushes.
• Reset or opt out of personalised ads via Android’s Ads settings.
• Clear the app’s local data to wipe everything stored on the device.
• Delete your account from the Profile screen at any time.
• Sync is optional — scans you never sync never leave your phone.

10. POLICY CHANGES

Updates to this policy

If we add or remove a data collection, this page is updated and the new version takes effect from the date shown above. Continued use of the app after that date means you accept the revised policy.

11. CONTACT

Questions or data requests

For access, correction, export or deletion requests, use Chat With Admin inside the app (drawer or Profile screen). That desk is monitored by a human and is the fastest route. You can also reach the team through our Telegram community.