Bend light, not the rules of physics.
LumenFlux turns your screen into a glass-topped optics bench — lasers, mirrors, lenses and prisms you can place, rotate, and watch obey Snell's law in real time.
Every optical instrument, minus the fragile glass
Place components, angle them precisely, and watch how light actually behaves — rendered live, frame by frame.
Interactive Optics Bench
Drop lasers, planar mirrors, convex lenses, beam splitters and triangular prisms onto the canvas, then rotate each one to reshape the entire light path instantly.
Refraction & Laser Puzzles
Guide a beam around obstacles using nothing but mirror angles and lens placement — a growing set of logic puzzles built entirely from real optical geometry.
Wave Optics & Interference
Switch to wave mode to explore double-slit interference patterns and sweep across the visible wavelength spectrum on a live rendering canvas.
Snell's Law Calculator
Look up refractive indices, compute angles of incidence and refraction, and plot photon energy against wavelength — your optics lab notebook, digitized.
100% Offline
No account, no permissions, no audio setup, no cloud round-trip and no paywalls — every simulation runs entirely on your device, instantly.
Chromatic Dispersion
Send white light through a triangular prism and watch it split into its spectral components, rendered with the same math that governs a real glass prism.
A pocket-sized Snell's law lab
Drag the slider to change the angle of incidence, pick a medium, and flip the direction of travel — the ray bends exactly as light does.
Built by people who never stopped pointing lasers at walls
💡We're a small team of former physics students and interface designers who got tired of optics being taught through static diagrams. LumenFlux is what we wished we'd had on the bench during every reflection-and-refraction lecture.
🔺Our mission is simple: make the invisible mechanics of light visible, draggable, and rotatable, so that anyone — student, teacher, or curious mind — can build intuition by experimenting instead of memorizing formulas.
🌈Inside the app you get a full optics bench, laser-guided puzzles, a wave interference lab, and a Snell's law calculator — all rendered in real time, all offline, all wrapped in a calm, dark glass interface built to feel like an instrument, not a game.
🔦 Light travels in straight lines — until curiosity bends it.
Nothing leaves your device — ever
LumenFlux was designed as a fully offline optics laboratory. This policy explains, in plain terms, why there is almost nothing to disclose: the app does not collect, store, or transmit any personal data, usage data, or device data of any kind, to us or to anyone else.
- 1. Information We CollectWe collect absolutely nothing. LumenFlux does not ask for your name, email, location, photos, contacts, or any other identifying information — the app has no sign-up flow and no data-entry form of any kind.
- 2. How We Use InformationSince no information is ever gathered, none is analyzed, profiled, aggregated, or sold. There is no advertising engine and no behavioral tracking built into the app.
- 3. Data StorageEvery simulation — your saved bench layouts, puzzle progress, and calculator history — is stored locally on your own device. Nothing is uploaded to a server or synced to a cloud account, because LumenFlux has neither.
- 4. Third-Party ServicesLumenFlux does not embed analytics kits, advertising networks, crash-reporting trackers, or any other third-party SDK that could observe your activity. The app runs as a closed, self-contained optics engine.
- 5. Data SecurityBecause no data ever leaves your device, there is no transmission to intercept and no remote database to breach. Your local device's own security safeguards your saved sessions.
- 6. Children's PrivacyLumenFlux is suitable for learners of any age and collects no personal data from anyone, including children under 13. As no information is gathered, none is retained or shared, in line with COPPA principles.
- 7. Your ControlThere are no accounts to manage and nothing stored remotely to request deletion of. If you wish to remove all local app data, simply uninstall LumenFlux from your device — every trace of saved progress goes with it.
- 8. Changes to This PolicyIf our practices ever change, an updated policy will be published within the app along with a revised effective date. Continued use of LumenFlux after an update constitutes acceptance of the revised terms.
- 9. ContactQuestions about this policy can be sent to privacy@lumenfluxopticsphysicsapp.com.
Say hello — we read every message
💬 Whether you've spotted a bent beam that shouldn't bend, want a feature on the bench, or just want to talk photons — reach out any time.
⏱️ We typically reply within 24–48 hours.