SASS vs FlickerSense

The SASS app makes it very easy for you to manage your SASS account, book into our classes and events and keep in touch with us. You can easily message us if you have a question or want to share something with us. You can also follow our public feed to see any announcements we make, promos we run, or content we share.

FlickerSense turns your iPhone into a professional light analyzer. Detect invisible flicker, measure brightness, and check color temperature — all in seconds. Many artificial lights flicker at frequencies invisible to the eye but potentially harmful to your health. FlickerSense uses 240 FPS camera technology to detect flicker up to 120 Hz, helping you identify problematic lighting anywhere you spend time. ▸ DETECT INVISIBLE FLICKER • Measure flicker frequency up to 120 Hz • Detect 100 Hz (50 Hz AC) and 120 Hz (60 Hz AC) flicker • See flicker intensity percentage • Identify potentially problematic lights ▸ MEASURE LIGHT QUALITY • Brightness in lux • Color temperature in Kelvin • Melanopic blue light analysis (Premium) • Personalized recommendations ▸ EASY TO USE • Point your camera at any light source • Get instant, detailed results • Standard or high-precision modes • No account required — works offline ▸ PRIVACY FIRST • All data stays on your device • Camera never recorded or stored • No tracking or advertising ▸ FREE FEATURES • Unlimited scans • Flicker, brightness & color temperature • 7-day scan history • Optional research contribution ▸ PREMIUM FEATURES • Unlimited history + iCloud sync • Trends & analytics with charts • Locations with GPS mapping • Workplace compliance (EN 12464-1, OSHA, WELL) • Before/after scan comparisons • Export as CSV or PDF • Smart recommendations WHY CHECK YOUR LIGHTS? Flickering lights can cause headaches, migraines, eye strain, and difficulty concentrating. Common sources include LED bulbs, fluorescent tubes, dimmable lights, and cheap LED products. WHO IS FLICKERSENSE FOR? • People with eye strain or headaches at work • Those with migraines or photosensitivity • People with autism, ADHD, or sensory sensitivity • Parents, office workers, designers • Lighting professionals TECHNICAL DETAILS • 240 FPS capture for precise measurements • 120 Hz detection limit (Nyquist frequency) • FFT analysis for accurate frequency detection DISCLAIMER FlickerSense is not a medical device. Results are estimates based on camera analysis. Consult healthcare professionals for medical concerns. support@ephyrtech.com https://landing.ephyrtech.com/privacy-policy/ https://landing.ephyrtech.com/terms-of-use/