Lux Meter Pro - Light Tester

The only lux meter app with BS 5266 emergency lighting compliance, PDF certificates, logbooks, and minor works reports — built for UK electricians, inspectors, and facility managers.
Turn your iPhone into a professional light testing toolkit. Measure lux levels, run 1-hour and 3-hour discharge tests, generate fire alarm certificates, and export everything as PDF — no additional hardware needed.
REAL-TIME LUX MEASUREMENT
Instant illuminance readings using your iPhone's built-in sensor. Accurate enough for site surveys, workplace assessments, and lighting design verification.
PHOTO-BASED LIGHT READINGS
Capture photos alongside each reading for site documentation. Perfect for audit trails and client reports.
ROOM GRID MAPPING
Build light heatmaps across any space. Identify dark spots, verify uniformity, and pinpoint where lighting falls below safe levels.
EMERGENCY LIGHT TESTING (Pro)
Run timed 1-hour and 3-hour discharge tests to BS 5266 standards. Monitor compliance levels throughout the test and record results automatically.
CERTIFICATE GENERATION (Pro)
Generate professional-grade documents on site, ready to hand over or email:
— Emergency Lighting Periodic Test Certificate
— Emergency Lighting Logbook
— Minor Electrical Works Certificate
— Fire Alarm Certificate
EXPORTABLE REPORTS
Save all lux data and compliance reports as PDFs or CSVs. Attach photos, timestamps, and location references.
HISTORICAL TRACKING
Compare readings over time for any location. Track whether lighting conditions have changed between inspections.
BUILT FOR PROFESSIONALS
— Electricians and lighting contractors
— Facility and building managers
— Fire safety and compliance officers
— Architects and interior designers
— Health and safety inspectors
SUBSCRIPTION PLANS
Weekly Lux Pass – £0.99/week
Monthly Lux Pass – £2.99/month
Yearly Lux Pass – £24.99/year
Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings.
Payment is charged to your Apple ID account at confirmation of purchase.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://luxmeterpro.com/private-policy
Support: https://luxmeterpro.com/contact-us