Under development for iOS & Android · waitlist open
How big will your puppy get?
Meet your puppy, fully grown.One photo, three quick questions, and you get a predicted adult size range — plus an AI portrait of the dog your puppy is turning into. Weigh in each month and watch the range narrow.
You're on the list — we'll email you on launch day. Now go play with that puppy.
That didn't go through — check the email address and try again.
No spam — one email when we launch. That is the whole deal.
The grown-up portrait is generated by AI from your puppy's photo. It is a prediction of how they may look, never a real photograph — and it is labelled that way everywhere it appears.
How it works
From puppy photo to grown-up dog, in three steps
No measuring tape, no spreadsheets. Just your phone and one wriggling puppy.
Step 1
Snap a photo
Point your camera at the puppy. The app detects the breed — you can correct it if it guesses wrong — then asks their age, weight and sex.
Step 2
Meet the grown-up
Back comes a predicted adult size range, built from real veterinary growth data — plus an AI portrait of your puppy all grown up, always labelled as a prediction.
Step 3
Weigh in monthly
Log a weight once a month. Each weigh-in plots your puppy against the typical curve for a dog of that size and tightens the prediction.
Why trust the numbers
Built on real growth data, not a rule of thumb
Every prediction comes from anonymised veterinary weight records — and we publish how far off it typically is.
394,000
dogs tracked from puppyhood to adulthood to validate the prediction
13.4% → 7.4%
typical prediction error at three months, narrowing by the first birthday
15M
anonymised veterinary weight records behind the growth model
Monthly tracking
The weigh-in that takes ten seconds
Once a month, pop your puppy on the scale and log the number. It turns into a small ritual — a weight, a photo, a note about whichever shoe they destroyed this month — and every point lands on the growth chart.
Every prediction is a range, never a single number. At eight weeks it spans roughly a factor of 2.2 from the low end to the high end. By the first birthday it has tightened to about 1.34 — the same puppy, a far sharper answer.
If a weigh-in lands above or below the typical curve, the app tells you plainly and suggests a chat with your vet. It never gives medical advice.
Questions people ask first
Is the grown-up photo real?
No, and we will never pretend otherwise. It is generated by AI from your puppy's photo — a prediction of how they may look as an adult, not a photograph of a real dog. Every grown-up portrait carries an AI label wherever it appears.
How accurate is the size prediction?
Typical error is about 13.4% at three months old and about 7.4% by the first birthday, measured on roughly 394,000 dogs tracked from puppyhood to adulthood. We publish the whole breakdown rather than one flattering number.
When does it launch?
The iOS and Android apps are under development right now, so there is no date to promise yet. Join the waitlist and you will get exactly one email on launch day — no countdowns, no newsletter, no drip campaign.
Waitlist
Find out how big that puppy gets
Leave your email and we will tell you the day it launches. One email — then we will leave you alone with your dog.
You're on the list — we'll email you on launch day. Now go play with that puppy.
That didn't go through — check the email address and try again.
No spam — one email when we launch. That is the whole deal.