Privacy Policy
Last updated: August 26, 2026
BulbMatch — Light Bulb Color ("the App") is published by Bulpara Inc ("we", "us", "our"). This policy describes what happens to information when you use the App. The short version: the App collects nothing, sends nothing, and has no account.
1. The Camera
- The camera is the only permission the App asks for. It is requested the first time you take a reading, and you can withdraw it at any time in iOS Settings.
- While the camera preview is open, the App reads frames to estimate the color of the light falling on the scene. That happens live, in memory, on your iPhone.
- Frames are never saved. No photo or video is written to disk, nothing is added to your photo library, and nothing is transmitted anywhere.
- The App uses the rear camera only.
- There is no photo library permission, no microphone permission and no location permission — the App does not request them at all.
2. Data Stored on Your Device
Everything the App saves stays in the App's own store on your iPhone (SwiftData and UserDefaults). None of it is uploaded, backed up to our servers, or shared with anyone.
- Rooms and fixtures: the names you type, bulb count, base type, and the result saved for each fixture.
- Measurement history: each reading's result, whether you used the white-paper method, and the iPhone model and camera it was taken with — recorded so the App can warn you when readings come from different hardware instead of quietly mixing them.
- Preferences and counters: theme, any calibration offset you set, and a local count of free measurements used.
- Purchase status: whether the one-time unlock has been bought, cached locally so features stay unlocked offline.
Deleting the App deletes all of it. There is no cloud sync and no way for us to recover it, because we never had it.
3. No Analytics, No Trackers, No Network
- The App contains no analytics, no advertising SDKs, no crash reporters and no third-party trackers of any kind.
- It shows no ads.
- The App has no network layer — it makes no requests to us or to anyone else, and works normally in Airplane Mode.
- We operate no servers that hold user data. There is no account to create and no sign-in.
- We do not sell or share personal data, because we do not receive any.
4. Purchases
The one-time unlock is sold and processed by Apple through StoreKit and the App Store — the only third party involved in the App. Apple tells the App whether the purchase is active; it does not give us your payment details, and we never see them. Apple's handling of that transaction is governed by Apple's privacy policy.
5. Your Rights
You can:
- Delete any fixture, room or reading from inside the App
- Delete the App to remove every saved room, fixture, reading and preference from your device
- Revoke the camera permission at any time in iOS Settings → Privacy & Security → Camera
- Ask us anything about how the App handles data at hello@bulpara.com
Rights to access, correct, export or erase personal data apply to data a company holds about you. We hold none, so there is nothing for us to retrieve or delete on your behalf — the copy on your device is the only copy.
6. Children's Privacy
The App is rated 4+. It collects no personal information from anyone, including children, and contains no ads, no social features and no user-generated content sharing.
7. Changes to This Policy
We may update this policy from time to time. Changes will be posted on this page with an updated "Last updated" date.
8. Contact Us
If you have questions about this privacy policy, contact us at: