Comparison

InchUp vs MaxHeight

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

Head to head
About

InchUp

Predict your adult height using science-backed growth models and measure your current height instantly with your iPhone camera. Track your growth trajectory, get personalized nutrition plans, and daily exercise routines to support healthy development.

Highlights
  • Height prediction calculator
  • AR height measurement
  • Growth trajectory chart
  • Personalized nutrition plan
  • Daily exercise routine
  • Science-backed growth models
Features
Read full description

Ever wonder how tall you'll actually be? InchUp uses science-backed growth models to predict your adult height — then lets you measure yourself right now using your iPhone camera. No tape measure. No guessing. Just clear answers based on real data. Enter your age, current height, and your parents' heights. InchUp runs the mid-parental height formula and Tanner stage growth model — the same methods used in pediatric medicine — and shows you your estimated adult height and where you are on your growth curve. Then point your camera and measure your height instantly. AR body detection gives you your current height in under 3 seconds, accurate to ±0.5 cm, with no equipment needed. WHAT YOU GET Height prediction calculator Enter your age, height, and parents' heights. Get your estimated adult height and potential height range, based on the mid-parental height formula and Tanner stage growth models. Height measurement by camera Point your iPhone at yourself and get your height instantly. AR body detection works in seconds — no tape measure, no wall marks, no second person needed. Accurate to ±0.5 cm. Growth trajectory chart See your full growth curve from age 6 to 23. Log your height over time and track whether you are on pace, ahead, or behind your predicted path. Spot growth spurts before they happen. Nutrition plan for growth Daily meals across Breakfast, Lunch, and Dinner built around calcium, vitamin D, protein, and zinc — the key nutrients that support bone development and healthy growth during teen years. Daily exercise routine Beginner-friendly exercises for posture improvement and spinal decompression. Includes bar hanging, cobra stretch, and pelvic shift — moves recommended for growing teens and young adults. BUILT ON REAL SCIENCE InchUp predictions use the same growth data trusted by paediatricians worldwide. The mid-parental height formula and Tanner stage percentile charts have guided clinical height estimates for decades. Our AR measurement uses Apple's body-detection framework for accurate, hands-free results every time. WHO IS InchUp FOR - Teens aged 13 to 18 who want to know how tall they will grow - Parents tracking a child's growth and looking for a science-based height estimate - Young adults aged 18 to 25 focused on posture, nutrition, and reaching their full height potential NOTE: Height predictions in InchUp are estimates based on established growth models, not guarantees. Actual height depends on genetics, nutrition, sleep, and overall health. Always consult a healthcare professional for medical advice about growth. Your growth window will not stay open forever. Start tracking during the years that count. Subscription Plans: Weekly Access: $4.99 per week Yearly Access: $29.99 per year Payment will be charged to your Apple ID account at the time of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Renewal charges will be applied to your account within 24 hours before the subscription ends. You can manage and disable auto-renewal at any time through your App Store account settings. Privacy Policy: https://sites.google.com/view/talltell-ios/home Terms of Service: https://sites.google.com/view/talltell-ios/term-of-use Subscription Terms: https://sites.google.com/view/talltell-ios/subscription-terms The Appstrome team is dedicated to improving your experience. If you have suggestions or questions, feel free to contact us at appstrome.tech@gmail.com .

About

MaxHeight

Predict your adult height using established pediatric methods based on your current measurements and family history. Receive a personalized daily plan including exercise, nutrition targets, and growth tracking to help you reach your potential. Connect with a supportive community for encouragement and advice.

Highlights
  • Adult height prediction
  • Personalized daily exercise plan
  • Calorie, protein, calcium, and vitamin D targets
  • Meal logging and food database
  • Growth coach for questions
  • Community forum for users
  • Height tracking and measurement logging
Features
Read full description

See how tall you'll be. MaxHeight predicts your adult height in about 60 seconds. Answer a few questions — your height, your parents' heights, where you are in puberty — and get your predicted adult height with its likely range. No photos, no guessing: the prediction blends up to four established pediatric methods, built on CDC growth data. Then do something about it. MaxHeight turns your prediction into a daily plan: • YOUR PREDICTION — predicted adult height, your likely range, and how you compare with people your age right now. • A PLAN FOR EVERY DAY — a 365-day exercise plan that follows the WHO and US physical-activity guidelines for teens: impact and strength on build days, mobility and posture in between. Every move is illustrated. • EAT FOR GROWTH — daily calorie, protein, calcium and vitamin D targets from official US references (NASEM, USDA). Photograph a meal or describe it in words; foods the app doesn't know are looked up in the USDA reference database, and anything estimated is marked so you can correct it. • ASK THE COACH — a growth coach that answers your questions and can look at a plate of food, your posture, or an exercise position. • COMMUNITY — ask a question, share progress, and hear from people your age. Text only, every post checked, 13 and up. • TRACK IT — log your height as you grow. Your real measurements sharpen the prediction over time. • STAY ON IT — streaks, achievements, and an optional daily reminder. Where our numbers come from: every figure in MaxHeight traces to published science — CDC growth charts, NASEM dietary references, USDA food data, WHO activity guidelines. The methodology screen shows exactly which, so you can check for yourself. No app can predict height exactly — that's why MaxHeight always shows the range. MaxHeight is a subscription. Terms: https://maxheight.app/terms · Privacy: https://maxheight.app/privacy

Screenshots

InchUp4 screens
MaxHeight4 screens

Verdict

The call

The clearest difference is rating: MaxHeight at 4.3 against InchUp's 1.0. MaxHeight also leads on update cadence (every 6 days vs every 3 months) and ratings volume (4 vs 1). InchUp's advantage is monetization model (free with in-app purchases vs subscription). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. InchUp sells 2 in-app purchases, starting at $6.99 per 7 days and MaxHeight sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MaxHeight holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

InchUp ships an update every 3 months, MaxHeight every 6 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
InchUp versus MaxHeight: the parameters behind the verdict, then further details
ParameterInchUpMaxHeight
PriceFreeFree
Rating1.0 (1 ratings)4.3 (4 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings14 — better
Update frequencyEvery 3 monthsEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhoneiPhone, iPad — better
Requires iOS17.616.4 — better
Further details — not scored
Size32 MB116 MB
Age rating4+4+
DeveloperArbab AshrafCiel Labs LLC

In-app purchases

2 purchases

InchUp

Subscriptions2
  • Unlock Weekly Premium$6.997 Days
  • Unlock Yearly Premium$29.991 Year
2 purchases

MaxHeight

Subscriptions2
  • Weekly7 Days trial$4.997 Days
  • Yearly$34.991 Year

Questions

Is InchUp free?
InchUp is free to download, with in-app purchases available.
Is MaxHeight free?
MaxHeight is free to download, with in-app purchases available.
Which has better reviews, InchUp or MaxHeight?
MaxHeight is rated higher. InchUp averages 1.0 out of 5 from 1 ratings, while MaxHeight averages 4.3 from 4 ratings.
Do InchUp or MaxHeight have ads?
Neither InchUp nor MaxHeight shows ads.
Which is updated more often, InchUp or MaxHeight?
InchUp ships an update every 3 months, and MaxHeight every 6 days. Most recently, InchUp was updated on October 31, 2026 and MaxHeight on October 25, 2026.

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