Comparison

Height Predictor vs BeTaller

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

Head to head
About

Height Predictor

Features
Read full description

Estimates a child's adult height from the CDC stature-for-age charts plus both parents' heights. Shows a range, the percentile chart with your kid's dot on it, and the math behind the number. Every source is in the app. A Sources & references screen lists the CDC growth charts, the published papers behind the percentile and mid-parental steps, and the guidance behind each daily prompt, each one linked and saying which part of the app it backs. Log height a few times a year to follow the curve. There's a daily habit checklist and guided stretch routines with illustrated demos. Stretching is for posture and mobility; it does not change adult height. Works in cm or ft/in. Runs entirely on your phone. No account, no server, no analytics, no ads. Deleting your data in settings removes it completely. Heightcast is an estimate built from public growth references. It is not a diagnosis, not a medical device, and not a substitute for a pediatrician. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

BeTaller

Features
Read full description

How much taller will your child grow? BeTaller answers with numbers. We sell no milk and no supplements. FOR PARENTS Enter your child's age, height and weight and both parents' heights. In two minutes you get: • Your child's predicted adult-height range • Where your child stands among Vietnamese children of the same age and sex • What to watch this year, and when a doctor's visit is worth it No bone-age X-ray needed. HOW THE PREDICTION WORKS BeTaller blends three published methods: Khamis-Roche (Pediatrics, 1994), Vietnamese population height data from the NCD Risk Factor Collaboration (The Lancet, 2020) and mid-parental (Tanner) height. Khamis-Roche was built on a Western population and runs high for Vietnamese children, so we limit its weight and anchor the result to Vietnamese data. Every source is listed in the app, linked to the original paper. UNLOCK ONCE, KEEP IT UNTIL THEY ARE GROWN • The exact figure and your child's growth curve to 18 • An age-right sleep, food and exercise plan, 10 minutes a day, built with a registered physiotherapist practising in Canada • A monthly check: is your child still on track? • AI meal scanner: photograph a meal and see what protein, calcium and vitamin D3 are missing, Vietnamese dishes included • Reminders for parents, in Vietnamese and English EACH YEAR OF GROWTH COMES ONCE Once growth plates close, no method lengthens bone. BeTaller helps you make the most of the years your child is still growing: enough sleep, the right food, regular movement, and an early signal when something looks off. TEENS CAN USE IT TOO If your 12 to 18 year old installs it themselves, the app speaks to them in their own voice: a daily Growth Score, a bamboo shoot that grows, 17 badges. They can send their result to you with one tap. VIETNAMESE AND ENGLISH Vietnamese by default, full English, for Vietnamese families everywhere. — Note: BeTaller is not a medical device and does not diagnose, treat, cure or prevent any medical condition. It does not replace professional medical advice. Predictions are statistical estimates, not promises about height. Pricing: unlock once for US$14.99 (399,000ā‚« in Vietnam), yours forever, nothing renews. Or weekly at US$2.99 (79,000ā‚«), renewing automatically unless cancelled at least 24 hours before the current period ends. Payment is charged to your App Store account. Manage or cancel in Settings → Apple ID → Subscriptions. Terms of Use (EULA): https://betaller.app/terms Privacy Policy: https://betaller.app/privacy

Screenshots

Height Predictor4 screens
BeTaller4 screens

Verdict

The call

Height Predictor and BeTaller are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 sells 3 in-app purchases, starting at $2.99 per 7 days and BeTaller sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Height Predictor ships an update every 3 days, BeTaller every 5 days. Both last shipped on October 29, 2026.

ScorecardNo meaningful differences
Height Predictor versus BeTaller: the parameters behind the verdict, then further details
ParameterHeight PredictorBeTaller
PriceFreeFree
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size38 MB73 MB
Age rating4+4+
DeveloperHan KimQuang Nguyen

In-app purchases

3 purchases

Height Predictor

Subscriptions2
  • Weekly$2.997 Days
  • Yearly$19.991 Year
One-time1
  • Heightcast Pro$4.99
3 purchases

BeTaller

Subscriptions2
  • Weekly$2.997 Days
  • Yearly$34.991 Year
One-time1
  • Lifetime$14.99

Questions

Is Height Predictor free?
Height Predictor is free to download, with in-app purchases available.
Is BeTaller free?
BeTaller is free to download, with in-app purchases available.
Do Height Predictor or BeTaller have ads?
Neither Height Predictor nor BeTaller shows ads.
Which is updated more often, Height Predictor or BeTaller?
Height Predictor ships an update every 3 days, and BeTaller every 5 days. Most recently, Height Predictor was updated on October 29, 2026 and BeTaller on October 29, 2026.

Other comparisons