SpectraSnap

SpectraSnap is a mobile + web app that estimates basic material properties from a smartphone photo by leveraging a low-cost clip-on diffraction grating (or a printable grating template). Users capture a light source or reflected spectrum from a sample, and the app calibrates wavelength using known reference lines (e.g., common LEDs). It then outputs a rough spectrum curve, peak locations, and simple classifications (e.g., “likely warm-white LED,” “chlorophyll-like absorption,” “possible sodium contamination”). This is not lab-grade spectroscopy and the app must be explicit about accuracy limits; it’s for screening, education, field notes, and quick comparisons over time. The web dashboard stores sessions, lets users export CSV, and supports team sharing for classrooms or field crews. Monetization is realistic via education licenses and a small hardware accessory margin.