Privacy
Dualcent is a perfume app: you scan a bottle, it tells you which perfumes layer well with it, and it keeps the perfumes you have smelt. This page says what the app keeps about you, why, and how to get rid of it. It is written to be read.
Dualcent is run by Abdulrahman Ali in the United Kingdom. For anything about your data, write to support@dualcent.app.
What the app keeps
- Your account. The email address you sign in with, or the identifier and email your Google or Apple account gives us when you sign in that way. There are no passwords. We never see your Google or Apple password.
- Your scans. Which perfume you scanned and when. A small snapshot of the bottle in front of the camera is kept privately for up to 90 days, so that scans can be checked for honesty, then deleted. The label text read from the picture is used for the match and not kept.
- Your collection. The perfumes you have smelt, the ones you own, the layers you save, try and rate, your spins and what they landed on, and the spins you have earned or bought.
- Location, only if you allow it. When you scan in a shop with location allowed, the app adds a "tried in store" mark. The app asks first and works without it. Your location is never stored as a history.
- Motion, not stored. While the camera is open the phone's motion sensor helps tell a real bottle from a picture of one. Those readings are used in the moment and thrown away.
- Notifications, if you turn them on. A device token so the app can send you its reminders. Turn them off in your phone's settings at any time.
- Purchases. The App Store or Google Play handles payment. We receive a receipt that says the unlock or a spin pack was bought, never your card details.
- Security logs. Server logs with your IP address, device type and the time of each request, kept for 30 days to stop abuse and to limit how fast the service can be called.
The web version
If you use Dualcent in a web browser rather than the app, the picture of the label is sent to Google Cloud Vision to read the text, because browsers have no reader of their own. Google processes that picture under its own terms and we do not keep it beyond the scan. The app on your phone reads labels on the phone and sends no picture to Google.
Where it lives
- Supabase hosts the database and sign-in, in London.
- Cloudflare serves this site, the web version and the perfume pictures.
- Google provides sign-in with Google and, for the web version only, label reading.
- Apple provides sign-in with Apple and purchases on iPhone; Google Play provides purchases on Android.
- Purelymail sends the sign-in code emails.
These companies process data on our behalf to run the service. We do not sell your data, we show no adverts, and the app contains no analytics or tracking tools.
What the app does not keep
The perfume catalogue, the names, houses, notes, accords and community ratings, is information about perfumes, not about you. Pictures you share from the app are made on your phone and go wherever you send them; the app does not post anything anywhere and keeps no copy.
How long
Account and collection data stay until you delete the account. Scan snapshots go after 90 days. Security logs go after 30 days. When you delete your account, everything above is removed within 30 days, apart from purchase records we must keep for accounting.
Your rights
You can ask for a copy of your data, have it corrected, or have it deleted. The quickest way to delete everything is in the app: Settings, then Delete account. Otherwise write to support@dualcent.app from the address on the account. If you think we have handled your data badly you can complain to the Information Commissioner's Office at ico.org.uk.
Age
Dualcent is for people aged 13 and over. If you believe a younger child has made an account, tell us and we will remove it.
Changes
If this page changes in a way that matters, the app will say so the next time you open it. The date at the top is always the date of the current version.