--- title: "LumenLab - Lux Meter - Reviews, Revenue and Downloads in Canada | Apple App Store" description: "LumenLab is 100% software, using your iPhone's built-in camera — no external hardware required. LumenLab turns your iPhone's rear camera into a real-time light meter. By reading the camera's exposure " --- # LumenLab - Lux Meter — Canada > Camera Light Meter · EV ![LumenLab App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/86/4e/3a/864e3a3c-5698-7c5f-d214-25f33e8cf4ed/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png) **Developer:** [杰 向](https://apptail.io/developer/developer-qnDkOb) **Category:** Photo Video **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.clawbot.lumenlab **Store:** Apple App Store **Country:** Canada **Version:** 1.0.5 (released 2026-06-20) **Original Release:** 2026-04-17 **Languages:** Chinese, English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id6762075216) **AppTail Page:** [https://apptail.io/app/lumenlab-lux-meter-ixCz/canada](https://apptail.io/app/lumenlab-lux-meter-ixCz/canada) ## LumenLab Description LumenLab is 100% software, using your iPhone's built-in camera — no external hardware required. LumenLab turns your iPhone's rear camera into a real-time light meter. By reading the camera's exposure metrics (ISO, shutter, aperture), it computes the illuminance of your environment in lux — perfect for photographers, plant growers, interior designers, and anyone who cares about lighting. KEY FEATURES • Real-time lux reading using camera exposure parameters • Color-coded zones: dark · dim · normal · bright · glaring • Lighting recommendations for each level • One-tap session reset • Core measurement works offline — no tracking, no ads, no account USE CASES • Photographers checking ambient light levels • Cinematographers metering scene illumination • Plant growers ensuring grow-light intensity • Interior designers checking room brightness • Office ergonomics (recommended 300–500 lux) • Reading nook brightness check PRO FEATURES (optional subscription) • Advanced metrics row: EV, ISO, Shutter, Aperture (f/) • Session statistics: minimum, average, maximum lux • Calibration multiplier to align with a professional reference meter • CSV export of full session log (timestamp, lux, EV, calibration factor) • Zero ads forever HOW IT WORKS LumenLab opens the camera (no recording, no preview saved), reads the device's auto-exposure metrics every frame, and applies the photographic equation: EV = log₂(N²/t) − log₂(S/100) lux ≈ 2.5 × 2^EV × calibration This is a practical camera-exposure estimate. For critical comparisons, calibrate against a known light source or reference meter. LIMITATIONS The iPhone camera is not a calibrated photometer. Readings are estimates and can vary by device, lens, scene reflectance, and auto-exposure behavior. Not suitable for regulatory, lab, or safety measurements. PRIVACY The camera is opened only to read auto-exposure metadata. No images, video, or audio are recorded, saved, or transmitted. No analytics, no ads, no account. StoreKit is used only for the optional Pro subscription. SUBSCRIPTION INFO • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage and cancel your subscriptions by going to App Store → Account → Subscriptions. Privacy Policy: Terms of Use: SUPPORT jie.xiang.jm@gmail.com ## LumenLab Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/73/6f/21/736f218f-72b2-cd9c-23de-ca1cdb026dec/01_dim.png/1290x2796.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0d/9f/2d/0d9f2d55-f072-206b-e8cc-43eb22ae93d3/02_normal.png/1290x2796.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/36/15/2e/36152e13-063c-986d-6d15-89c5f28e1b9f/03_bright.png/1290x2796.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a3/ce/d0/a3ced0ad-15c0-a0a2-d934-408699fe81c0/04_calibration.png/1290x2796.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a9/52/6c/a9526caa-fb5d-d918-0c91-23556c3e6e75/05_paywall.png/1290x2796.png) ## LumenLab In-App Purchases | Item | Price | |------|-------| | LumenLab Pro Weekly | $1.99 | | LumenLab Pro Yearly | $24.90 | ## LumenLab Available In - [Canada](https://apptail.io/app/lumenlab-lux-meter-ixCz/canada) - [Chile](https://apptail.io/app/lumenlab-lux-meter-ixCz/chile) - [United Kingdom](https://apptail.io/app/lumenlab-lux-meter-ixCz/united-kingdom) - [Ghana](https://apptail.io/app/lumenlab-lux-meter-ixCz/ghana) - [United States](https://apptail.io/app/lumenlab-lux-meter-ixCz/united-states) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*