BeTallFor ages 13–19
Your genes set the range. Your habits decide where you land in it.
BeTall estimates your adult height from published growth research, then turns the things that actually matter — sleep, food and training — into a few small wins a day.
No email, no password, no ads. An estimate, not a medical assessment.
Example projection. Yours is built from your own answers.
How it works
A range you can trust, and a plan you can keep
Answer 22 questions
Your age, height, weight, your parents’ heights and a few questions about where you are in puberty. About four minutes.
See your honest range
We use the Khamis-Roche method (Pediatrics, 1994) and show the result as a range with an accuracy score — never a single magic number, and never 100% sure.
Close the ring each day
Eight segments: seven days of sleep, food and training, plus your weekly measurement. Every new measurement tightens your range.
What’s inside
Built around the levers that are real
Each takes about two taps to log. Nothing scolds you for a missed day.
Sleep
A target set for your age
Teens need more than the “8 hours” everyone quotes. Your band is based on your age, not a slogan.
Age 13: 9–12.5 h · 14–17: 8–10 h · 18–19: 7–9 h
Nutrition
Snap a meal, get the numbers
Photograph what you eat and we estimate calories, protein, calcium and vitamin D. The photo is deleted straight after. You’re scored on getting enough — never punished for eating more.
Training
Mobility, posture and strength
A library of short routines. Posture work won’t lengthen bone, but it does change how tall you stand — and that’s worth having.
Coach
Andy, who knows your week
An AI coach that answers using your own logs — “you averaged 6 hours this week” beats “sleep matters”. It refuses the dangerous stuff and says so plainly.
The honest part
What BeTall will never do
Most height apps sell hope. We’d rather tell you the truth, including when growth is done — then help with posture, strength and confidence instead.
- Promise you extra inchesNothing in an app lengthens bone. We help you reach the height you were built for.
- Coach you on hormones, steroids or surgeryGrowth hormone, supplement dosing, peptides and limb-lengthening are refused, every time.
- Put you on a dietNo calorie deficits, no “over budget” warnings, and a hard minimum on your food target.
- Ask who you are, or sell what you logNo name, email or phone number. No advertising, and your data is never sold.
Find out where your range is
Free to start. Premium is a subscription through Google Play that you can cancel in two taps.
Coming soon to Google Play