Have an ultrasound of your baby? Curious about your baby's gender?
BOY OR GIRL?
Snap or upload your ultrasound image. Set gestational age and get instant feedback on whether timing is ideal for nub theory detection.
Our AI examines the fetal profile, spine curvature, and genital tubercle angle to deliver a boy, girl, or inconclusive prediction with confidence level.
Every scan is saved in a clean timeline. Compare predictions across weeks and revisit past results anytime.
Built-in timing checks tell you when nub theory is most reliable — typically between 12 and 14 weeks.
See exactly what the AI observed: fetal profile, spine visibility, and nub angle indicators explained in plain language.
Your ultrasound images stay on your device. We never share your personal health data with third parties.
Take a photo of your ultrasound printout or upload a digital image directly from your camera roll.
Slide to your baby's week. NubScan confirms whether timing is good for nub theory analysis.
Receive a boy, girl, or inconclusive result with confidence level and a detailed breakdown of findings.
NubScan is an AI-powered app that analyzes ultrasound images using nub theory to predict your baby's gender. Upload a sonogram, set the gestational age, and get an instant prediction with confidence level.
Nub theory examines the angle of the genital tubercle (the 'nub') on an ultrasound taken between 12–14 weeks. An upward angle often suggests a boy, while a more parallel angle may suggest a girl.
Nub theory accuracy depends heavily on image quality, fetal position, and gestational age. NubScan provides a confidence level with each prediction and flags inconclusive scans when the image isn't clear enough.
Nub theory works best between 12 and 14 weeks of gestation. NubScan includes a gestational age slider that tells you whether your timing is ideal for detection.
No. NubScan is for informational and entertainment purposes only. It is not a medical diagnostic tool. Always consult your healthcare provider for official gender confirmation.
Yes. Your scans are stored locally on your device. NubScan does not upload or share your ultrasound images with third parties.
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