Lux Light Meter: Illuminance
Not in any tracked top chart right now.
Updated 24 Oct 2026 · rankings refresh through the day
Developer灿耿 陈
CategoryUtilities
PriceFree
Released
Rating★ 4.9 (46)
Version26.10.1
Age rating4+
First seen by us
20 Oct 2026
Installs (est.)1k+ worldwide
Rating
4.9 ★
46 ratings
Measured
Lux Light Meter: Illuminance on the App Store
App details
App ID
6790679680
Publisher
灿耿 陈
On the store since
Jul 2026
Under a year
Minimum OS
iOS 17+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
13
AR EN FR DE JA KO PT RU ZH ES TH ZH …
Size
4 MB
Lux Light Meter: Illuminance downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Lux Light Meter: Illuminance makes money: subscriptions, one-off purchases and ads.
Ads · 1 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.9 ★
46 ratings
Measured
Ratings
46
Measured
About Lux Light Meter: Illuminance
Lux Light Meter: Illuminance
A practical lux and illuminance meter for iPhone. Measure ambient light in seconds, check if a room is bright enough for study, work, or home use, and get helpful exposure and plant-lighting guidance when you need it. Core metering works offline.
Key Features:
Ambient light metering - Live lux / fc readings with scene targets that tell you if the light is too dim, about right, or too bright — plus simple tips to adjust
Photography mode (Pro) - Aperture- or shutter-priority suggestions with ISO and exposure compensation so you can dial in exposure faster
Plant mode (Pro) - Estimate PPFD and DLI for common houseplants, with light source and daily photoperiod options
Continuous measure & history - Save single readings, track how light changes over time, and review min, average, and max values
Optional calibration - Fine-tune against a trusted meter; Pro saves separate factors for the front and rear cameras
Units & privacy-friendly storage - Switch between lux and fc; your measurements stay on your device
How to Use:
Open the app, allow camera access, and point your iPhone at the area you want to measure. Switch between Environment, Photography, and Plant modes, then save a reading or run a continuous measurement when you need a longer sample.
Subscription Options:
* Weekly and yearly subscriptions, plus a lifetime purchase
* Payment will be charged to your Apple ID account
* Subscriptions renew automatically within 24 hours before the current period ends
* Manage or cancel anytime in your Account Settings
Clearer readings. Better light decisions.
Terms of Use: https://lightmeter.xzonesoft.com/terms.html
Privacy Policy: https://lightmeter.xzonesoft.com/privacy.html
Contact Us: [email protected]
A practical lux and illuminance meter for iPhone. Measure ambient light in seconds, check if a room is bright enough for study, work, or home use, and get helpful exposure and plant-lighting guidance when you need it. Core metering works offline.
Key Features:
Ambient light metering - Live lux / fc readings with scene targets that tell you if the light is too dim, about right, or too bright — plus simple tips to adjust
Photography mode (Pro) - Aperture- or shutter-priority suggestions with ISO and exposure compensation so you can dial in exposure faster
Plant mode (Pro) - Estimate PPFD and DLI for common houseplants, with light source and daily photoperiod options
Continuous measure & history - Save single readings, track how light changes over time, and review min, average, and max values
Optional calibration - Fine-tune against a trusted meter; Pro saves separate factors for the front and rear cameras
Units & privacy-friendly storage - Switch between lux and fc; your measurements stay on your device
How to Use:
Open the app, allow camera access, and point your iPhone at the area you want to measure. Switch between Environment, Photography, and Plant modes, then save a reading or run a continuous measurement when you need a longer sample.
Subscription Options:
* Weekly and yearly subscriptions, plus a lifetime purchase
* Payment will be charged to your Apple ID account
* Subscriptions renew automatically within 24 hours before the current period ends
* Manage or cancel anytime in your Account Settings
Clearer readings. Better light decisions.
Terms of Use: https://lightmeter.xzonesoft.com/terms.html
Privacy Policy: https://lightmeter.xzonesoft.com/privacy.html
Contact Us: [email protected]
Latest updates
26.10.1
1. Adapted to iOS 27 status bar display, optimized full-screen metering experience.
2. Added support for Vietnamese and Thai languages.
3. Improved user experience.
Contact us: [email protected]
If you enjoy this update, please leave a review. Your support inspires us to keep improving the app.