Comparison

Height Predictor for Teens vs Tallwise

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Height Predictor for Teens

Features
Read full description

Put in your age, your height and how tall your mom and dad are, and it works out roughly how tall you'll be when you stop growing. You get a number plus a range, since nobody can know your exact final height. It uses the CDC height-for-age growth charts blended with your parents' heights (the mid-parental thing pediatricians do). I put a screen in that goes through the math step by step and linked every source, so you don't have to take my word for it. Your dot goes on the CDC percentile chart, so you can see what percent of kids your age you're taller than. Measure every few months and log it. If you're mid growth spurt the line shows it. There's a stretch section for posture with drawings and a timer, and a daily check-in for sleep and food. Stretching doesn't make bones longer. Standing straight still adds a surprising amount to how tall you look in photos though. Height maxxing people: this is the bit that tells you what you're starting from. The questions and the chart are free. Seeing your predicted height is a single purchase, I didn't want to do a weekly subscription like the other height apps. No account, what you type stays on your phone and Delete in settings wipes it. Late bloomers exist and plenty of people end up a few cm off any prediction. If your growth actually worries you, see a doctor. Works in cm or ft/in, ages 2 to 20.

About

Tallwise

Features
Read full description

How tall will you be? Tallwise gives you a real answer from growth science, not a guess. WHAT IT DOES • Predicts your adult height from your age, height, weight, your parents' heights and your stage of growth, using the Khamis-Roche method and CDC growth charts • Shows a range with an honest error band, and updates the prediction every time you log a new height • Places you on the growth chart: see your percentile and your projected path to adulthood • Growth Score from sleep, protein, movement and a daily 10-minute posture and mobility routine • Works for teenagers, and for parents logging a child TALLWISE PLUS Plus unlocks your exact predicted number, monthly re-predictions, the Growth Score and the daily routine, and the share card. Monthly, yearly or lifetime, cancel any time. Prices are shown in the app and may vary by country. PRIVATE BY DESIGN No account. No ads. No tracking. Everything stays on your phone. Tallwise is not medical advice. Predictions are statistical estimates with a stated error range; talk to a doctor about growth concerns. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://alagicamir.github.io/korklar-legal/tallwise/privacy.html

Screenshots

Height Predictor for Teens4 screens
Tallwise4 screens

Verdict

The call

The clearest difference is iOS requirement: Height Predictor for Teens at 15.1 against Tallwise's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Height Predictor for Teens sells 3 in-app purchases, starting at $2.99 per 7 days and Tallwise sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 6, 2026 and October 29, 2026 respectively.

Scorecard1 real difference Ā· 5 level
Height Predictor for Teens versus Tallwise: the parameters behind the verdict, then further details
ParameterHeight Predictor for TeensTallwise
PriceFreeFree
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size38 MB8 MB
Age rating4+4+
DeveloperHan KimAmir Alagic

In-app purchases

3 purchases

Height Predictor for Teens

Subscriptions2
  • Weekly$2.997 Days
  • Yearly$19.991 Year
One-time1
  • Heightcast Pro$2.99
4 purchases

Tallwise

Subscriptions3
  • Plus Monthly$1.991 Month
  • Tallwise Plus$4.997 Days
  • Tallwise Plus3 Days trial$34.991 Year
One-time1
  • Plus Lifetime$19.99

Questions

Is Height Predictor for Teens free?
Height Predictor for Teens is free to download, with in-app purchases available.
Is Tallwise free?
Tallwise is free to download, with in-app purchases available.
Do Height Predictor for Teens or Tallwise have ads?
Neither Height Predictor for Teens nor Tallwise shows ads.
Which is updated more often, Height Predictor for Teens or Tallwise?
Height Predictor for Teens ships an update every 4 days, and Tallwise every 4 days. Most recently, Height Predictor for Teens was updated on November 6, 2026 and Tallwise on October 29, 2026.

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