Lustre
by Data Concept Studio

Support

Last updated: 20 October 2026

Lustre is an app for iPhone and Android that gives you a mirror and turns your screen into an adjustable light. If something isn't working or you have a question, the fastest way to reach us is by email.

Contact us: contact@dataconceptstudio.com

Email support

Frequently asked questions

What is Lustre?

Lustre is a mirror and a light in one app. It shows a mirrored preview from your phone's front camera and uses the screen as a light you can adjust with a warmth and brightness dial. It includes the built-in presets Daylight, Evening, Office, Golden Hour and Max, lets you save your own presets, and offers layouts (mirror on top, mirror below, full screen, and on foldable phones held half-open the mirror on one side of the fold and the controls on the other), a symmetry grid, zoom, pause and photo capture.

How does the free trial work?

Lustre is free to download, and every feature is free for 14 days. On iPhone the 14 days are counted from the date you first downloaded the app with your Apple ID (as recorded by Apple). On Android, Google Play offers no free trial for one-time purchases, so they are counted on your device from the first time you open the app. When the trial ends, nothing is charged. The mirror, the light and the Daylight preset stay free forever; the rest of Lustre is unlocked by the full version.

How do I buy the full version?

Open Settings → Unlock the full version and complete the purchase with Apple (iPhone) or Google Play (Android). The full version is a single purchase that unlocks the rest of Lustre. A purchase belongs to the store and account you made it with: buying on iPhone does not unlock Android, and the other way round.

How much does it cost? Is it a subscription?

It is a one-time purchase, not a subscription: you pay once, with no renewal and no recurring charge. The price is shown by Apple or Google in your local currency before you buy (the base price is US $2.99; in Poland, for example, 9,99 zł). The purchase is not shared through Apple Family Sharing or Google Play Family Library.

How do I restore my purchase?

Open Settings → Restore purchases, or tap Restore Purchases on the purchase screen. Use this on a new phone, after reinstalling Lustre, or whenever the app doesn't show the full version you bought. Make sure you are signed in with the same Apple ID (iPhone) or Google account (Android) you used to buy.

My trial ended, but I already bought the full version

Use Settings → Restore purchases. Lustre will ask Apple or Google Play for your purchase and unlock the full version again at no extra charge.

The face-lighting hint says one side is darker — which side does it mean?

The hint names the side as you see it in the mirror on your screen. The hint is off by default; you can turn it on in Settings under Uneven light on your face. It runs on your device and nothing about your face is stored or sent. On Android, Google's ML Kit does the face detection and, once you have turned the hint on, sends Google technical usage metrics (never images or face data); see the Privacy Policy.

How does the room preset suggestion work?

Lustre reads the camera's own white-balance estimate of the light around you and suggests the preset that matches it. It is a suggestion based on the camera's estimate, not a measurement, so choose whichever preset looks right to you. This feature is on iPhone only; the Android version does not include it.

I denied camera access. Can I still use Lustre?

Yes. Without camera access Lustre still works as a light. To turn the mirror on, open the iOS Settings app, go to Lustre, and turn on Camera. On Android, open Settings → Apps → Lustre → Permissions and allow Camera. Your camera image stays on your device and is never uploaded.

Why does Lustre ask to add photos?

So it can save a photo to your Photos library when you take one. Lustre only asks to add photos; it never reads your library. If saving doesn't work, open the iOS Settings app, go to Lustre → Photos, and allow Lustre to add photos. On Android, Lustre asks for no photo or storage permission: it saves your photo to the Pictures/Lustre folder on your device, where your gallery shows it.

How do I get a refund?

Purchases are handled by Apple or Google, so refunds are too. On iPhone, request one at reportaproblem.apple.com; on Android, follow Google Play's refund process.

How do I contact you?

Email contact@dataconceptstudio.com, or use Contact us in Lustre's Settings. That opens your mail app with a draft that includes the app version, your iOS or Android version and your device model, which helps us answer. You can edit the draft before sending it.

Publisher / Wydawca

Lustre is published by Data Concept Studio Michał Szarek, a sole proprietorship (jednoosobowa działalność gospodarcza) registered in Poland and based in Kraków, Poland.

Privacy & terms

See our Privacy Policy and Terms of Use.