Heightly
See how tall you could get.
Heightly turns your genetics, growth stage and daily habits into a personalized height prediction — then builds you a daily plan of sleep, posture and nutrition to make the most of your potential.
What Heightly does
One quiz, a plan built for you
Track your trajectory
Quick daily check-ins keep your projection sharp — see exactly where you're headed against your goal, not just a one-time guess.
A daily plan, not a guess
Stretches and posture routines picked for your growth stage, with a simple daily checklist to keep you consistent.
Nutrition, simplified
Track the three nutrients that matter most for growth — protein, calcium, vitamin D — or just scan your plate and let the coach do the math.
Better sleep, tracked
Log your hours and watch your sleep score climb — consistency here is one of the biggest levers on your whole plan.
Make it yours
Adjust your daily targets any time — Heightly adapts the plan around numbers that actually work for you.
Questions
Before you ask
Can Heightly actually make me taller?
No guarantees — genetics set the range you can reach, especially once growth plates have closed. Heightly is not a medical device and doesn't provide medical advice; it helps you make the most of sleep, posture and nutrition habits during your growth window. Consult a doctor about specific growth concerns.
How does the prediction work?
From your quiz answers — age, current height, family heights and habits — using standard mid-parental and growth-chart methods. It's calculated right on your device.
Who is Heightly for?
Built for teenagers and for parents tracking a child's growth. Anyone can use the habit tracking — sleep, posture, nutrition — to build better routines.
Is my data private?
Your quiz answers stay on your device. No account, email or password is required to use the app, and there's no photo, camera or location access. We don't sell your data — see the full Privacy Policy for detail.
What does the AI coach do?
Answers questions and scans meal photos for nutrition feedback, with guardrails for teen users — no medical, supplement or diet-restriction advice, and it points to a doctor where appropriate.
How much does it cost?
£4.99/week or £29.99/year (about £0.58/week), plus a one-time lifetime option at £34.99. Prices in other regions are set by Apple. Cancel anytime in Settings → Apple ID → Subscriptions.
Out now
Find out what you're
actually capable of
Take the 2-minute quiz and see your personalized height forecast today.
Download on theApp StoreHeightly provides educational estimates and healthy-habit guidance. It is not a medical device, does not provide medical advice, and does not guarantee height gains — especially after growth plates have closed. Genetics set the range; habits help you make the most of it.