teewai scores your smile's whiteness from a single photo. Snap a photo and teewai's vision and colorimetry engine estimates whiteness, VITA Classical shade, and visible surface staining or discoloration on a 0-100 scale. You get an instant shade match, visible staining estimates, a personalized whitening plan, and a progress tracker that shows your improvement over time. Snap your meals and teewai identifies the chromogens, tannins and acids in your diet, rolling each into a daily stain load that shows exactly what's dimming your smile. Family plans include 5 members with 15 scans each per month, tracked individually. We use your Google account only to sign you in securely and create your profile. We never sell your data or use your photos to train AI models. Privacy Policy .