LuxPlan: Lux Meter & Log

Most light meters show a number and forget it. LuxPlan measures the light where you are with the camera — and keeps the reading, together with a photo of the place you measured.

LUX LOG — WHAT OTHER LIGHT METERS DROP

Point the camera, tap record, and the reading is saved with its time, a photo of the spot, and an optional note ("desk", "hallway"). The log shows every reading, how many you took today, and the average — so you can compare this corner with that one, or this morning with last night.

WHAT YOU GET

• Camera lux meter — reads the room's brightness from the camera's exposure, in lux or foot-candles
• A photo with every camera reading — the place, not just the number, so an entry from last month still means something. Saved on this device only, never uploaded
• Lux Log — every reading kept with its time and note, newest first, with a brightness bar to compare at a glance
• Lux guide — what the number means: 500-750 lx for study and reading, 300-500 lx for a desk or kitchen counter, and where starlight (0.001 lx) and direct sun (100,000 lx) sit
• Today's summary — how many readings today, and the average across them
• CSV export — take every reading with you
• Calibration — nudge the reading to match a reference meter, because phone cameras differ
• Works offline — no account; readings and photos stay on your phone

HONEST ABOUT LIMITS

Camera-based readings vary between devices and depend on where you point the phone, so LuxPlan is a practical meter, not a laboratory instrument — and it lets you calibrate. If the camera is unavailable you can type a value by hand, and the reading is kept without a photo.

NO ACCOUNT, NO CLOUD

Your readings and photos are stored only on this device — there is no sign-in and they are never uploaded. Deleting a reading deletes its photo with it. Crash reports, ads and the in-app purchase use their own services, as described in the privacy policy.

Free keeps up to 12 saved readings. The free version shows ads. LuxPlan Pro removes the limit and the ads. One-time purchase, no subscription.

Terms of Use (EULA): https://app.mint-soft.com/apps/luxplan/terms
Privacy Policy: https://app.mint-soft.com/apps/luxplan/privacy