Summary: Smart Shopping Calculator does not collect any personal data. All your calculations and comparisons are performed locally on your device. The app communicates with no external server, except for the optional Open Food Facts lookup triggered when you scan a barcode.
Smart Shopping Calculator is an Android app for comparing unit prices
(toilet paper, protein powder), developed privately by StellaSecret.
It is not operated by a commercial entity.
App identifier: com.stellasecret.smartshoppingcalculator.
Smart Shopping Calculator does not collect, store, or transmit any personal data to our servers. We have no servers of our own.
✕ No identification data (name, email, phone)
✕ No location data
✕ No navigation or usage data
✕ No advertising identifier
✕ No biometric or health data
The only data created by the app is the prices and product details you enter yourself.
This data is stored locally in your browser (via localStorage) if you use
the session save feature. It never leaves your device.
Smart Shopping Calculator offers a barcode scanning feature to auto-fill fields for a protein powder product. This feature is entirely optional and is only triggered by your explicit action.
3270160513847) is sent to Open Food Facts — no identifying data about you is transmitted.ℹ This feature is available in the Android app only, not in the web version.
The app requests camera access only when you trigger a barcode scan. The camera permission is used solely to capture a photo of the product to scan. No image is retained, transmitted, or analysed beyond reading the barcode.
✓ Camera permission is never requested at launch.
✓ No image is stored or sent to any server.
✓ You can deny the permission — the app remains fully functional via manual entry.
If you use the "Save session" feature, your comparison data (prices, product details)
is saved in your browser's local storage via localStorage.
✓ This data stays on your device and is never transmitted.
✓ You can delete it at any time using the "Clear session" button in the app.
✓ Uninstalling the app deletes all local data.
Smart Shopping Calculator contains no advertising and integrates no analytics or tracking tools (no Firebase Analytics, no Crashlytics, no advertising SDK, no third-party cookies).
The app requests no other permissions (no access to contacts, location, external storage, microphone, etc.).
Since Smart Shopping Calculator processes no personal data on its own servers, your rights of access, rectification, and deletion are naturally upheld: your data is on your device, under your full control.
For any privacy-related question, you can reach us at the address listed in section 10.
Smart Shopping Calculator is not specifically directed at children under 13 and does not knowingly collect any information from them.
If this policy is updated, the date at the top of this page will be changed accordingly. Significant changes will be noted in the app's release notes on the Google Play Store.
For any questions regarding this privacy policy: thaikhuevincent.nguyen@gmail.com