01
Upload scan
Send a clear side-profile scan from 12 weeks onward.
AI + human-checked nub theoryBaby gender prediction at 12 weeks. Just upload, that's it.
Discover your baby's gender from your 12-week scan. Our AI reads the nub, a real person double-checks it, and your prediction lands in your inbox in about 2 hours.
99 of 100 launch spots left£10.99 off £39.99
- ~2 hoursto your result
- Humandouble-checked
- Refundif wrong
- Private& secure
02New
AI reads the nub
Our model checks angle, shape, posture, and image clarity.
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Human double-check
A real person checks every AI reading — nub angle, clarity and baby’s position — before anything is sent.
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Private result
Your result arrives securely by email, usually within 2 hours.
Honest about accuracy
Nub theory, without the hype.
Published studies put nub theory at roughly 85–90% accuracy at 12–13 weeks with a clear side-on scan, rising as your baby grows. Our AI reads the nub, then a real person double-checks the angle, image clarity and baby's position before your prediction is sent. If it turns out wrong, you get your money back.
AI nub readingEvery scanangle, shape & clarity
Human double-checkEvery scanbefore anything is sent
Typical turnaround~2 hoursby email
Wrong prediction?Full refundmoney-back guarantee
85–90%
nub theory at 12–13 weeks
Typical accuracy in published studies: ~70% at 11 weeks, 85–90% at 12–13 weeks, 95%+ later. See the research →
Every prediction is double-checked by a real person before it reaches you — nub angle, image clarity and your baby's position.
The method
A gentle early glimpse, reviewed with care.
Clear side profile
The best scans show the baby from the side with the lower body visible.
Nub angle reading
We look for the genital tubercle and compare its angle to the lower spine.
Human double-check
A real person double-checks the AI reading before your result is sent.
Launch offer
£29 for our first 100 parents.
Launch pricing applies to every plan until 100 orders are in — then the prediction goes up to £39.99. Every plan includes the AI reading, a human double-check and the money-back guarantee.
99 of 100 launch spots left£10.99 off £39.99
£29 for our first 100 customers, then £39.99. Live count — no fake timers.
£29launch price · then £39.99
The prediction, human-checked
- AI nub theory reading
- Human double-check before it’s sent
- Result by email, usually within 2 hours
- Money-back guarantee if wrong
£34launch price · then £44.99
With priority review and a keepsake to treasure
- Everything in Essential
- Priority review — jump the queue
- Personalised keepsake certificate
- Money-back guarantee if wrong
£39launch price · then £49.99
The full reveal experience
- Everything in Premium
- Gender Reveal Party Pack
- Announcement cards + party games
- Money-back guarantee if wrong
100% money-back guaranteeWrong prediction? We refund the full fee — no fuss.
Only 6–8 weeks along? Try our early Ramzi theory reading →
Questions
What parents ask before uploading.
How does the launch offer work?
Our first 100 orders get the launch price of £29 (bundles cost a little more). Once those 100 spots are gone, the prediction goes up to £39.99. The spots-left counter on this page is live — no fake timers.
Who checks my scan?
Our AI reads the nub first, then a real person on the NubHub team double-checks every reading before your result is sent. It is a for-fun prediction, not a medical review — your 20-week scan is the official answer.
When can I upload my scan?
Nub theory works best from 12 to 14 weeks when the side-profile view is clear and the nub can be seen.
Is this medical advice?
No. NubHub is an early prediction service for entertainment and planning. Your medical team remains the source for clinical advice.
What happens if the prediction is wrong?
Send us your later confirmation scan and we will refund the prediction fee under the money-back guarantee.
How private is my scan?
Uploads are handled through a private flow, reviewed only for your prediction, and never used in public examples without permission.
Free pregnancy library
Clear, UK-focused guides for every stage.
Waiting on your result? Explore 10 topics of practical, UK-focused pregnancy guides from the NubHub editorial team.
Nub TheoryHow the 12-week nub predicts your baby’s sex — accuracy, angles, and how to read your scan.106 guides →Week by WeekWhat’s happening with you and your baby at every week of pregnancy, from 4 weeks onward.137 guides →Symptoms & Body ChangesEarly signs, aches, and body changes explained — what’s normal and when to get checked.248 guides →Scans & TestsDating scans, the 12-week scan, NIPT, and every antenatal test — what they show and when.199 guides →Nutrition & DietFolic acid, vitamins, safe foods, and meal ideas to nourish you and your baby.180 guides →Mental HealthAnxiety, mood, and wellbeing in pregnancy — practical support for how you feel.113 guides →Complications & Warning SignsBleeding, miscarriage, and warning signs explained with compassionate UK guidance.176 guides →Lifestyle & WorkWhat’s safe in pregnancy — travel, skincare, medicines, and everyday choices.126 guides →RelationshipsPartners, family, and announcements — navigating the people around your pregnancy.71 guides →Baby PreparationPlanning ahead — classes, birth choices, baby names, and getting ready for baby.81 guides →