# Size Me Up - Future Height Predictor

> Predicts future height using current measurements and CDC growth chart data. (iPhone/iPad app by Manana Development LLC.)

- Source: https://appshunter.io/ios/app/size-me-up-future-height-predictor/id320306886 (this page in markdown: same URL + `.md`)
- Developer: [Manana Development LLC](https://appshunter.io/developer/320306890)
- Category: Health & Fitness, Medical
- Price: $0.99
- Rating: 2.30/5 from 44 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 2.2.1 · 0 MB
- Languages: American English
- Released: 2009-06-28
- Data updated: 2026-06-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/size-me-up-future-height-predictor/id320306886/reviews.md

## What is Size Me Up?

Parents, are your kids going to outgrow you?

Kids, are you going to be taller than your parents or your older brothers and sisters?

If so, when will you pass them up? Size Me Up predicts your height at any future age.

First, see how you or your kids' height compares to Americans of the same age and gender. Specify the person's current height, current age and gender to get his or her "percentile ranking." 

The percentile ranking shows how the person sizes up to others. For example, a 10-year-old boy who is 4ft 9in is at the 82nd percentile. This means that he is taller than 82% of all 10-year-old boys and shorter than the remaining 18%.

Next, touch "Future Size Me" to predict height at any age in the future. Move the future age slider to watch the person grow from their current height to an estimate of their maximum height. 

There are numerous methods for predicting future height. Some use parent height, but this method is quite unreliable. It's not hard to find a family with children of very different sizes.

Size Me Up uses the fact that kids tend to stay very close to the same growth curve to predict future height based on their current height, age, gender and growth chart data.

The app uses the latest publicly available growth chart data from the United States Centers for Disease Control (CDC).

NOTE: The CDC data only shows percentile ranking between 3%-97%. If a child is VERY TALL or VERY SHORT for his or her age,  DON'T BUY THIS APP, IT WON'T WORK FOR THEM.

Children go through growth spurts, but most children, NOT ALL, stay close to the same growth curve over time. Using Size Me Up just before or after a growth spurt will give inaccurate results. (As will looking back at an old health report to see how accurate the app is). Using the app periodically over a year will give a good indication of where a child falls on the growth charts and will give a more accurate prediction of future height.

Remember this is just a prediction based on the US CDC growth chart data, your mileage may vary.

## Key features

- Future height prediction
- Percentile ranking comparison
- Uses US CDC growth chart data
- Input current height, age, and gender
- Visualize growth over time

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/size-me-up-future-height-predictor/id320306886/reviews.md

### 1/5 — Doesn't work

*2015-08-22*

Bad interface. Will not calculate a future height. Should be removed from App Store.

### 3/5 — Not accurate

*2013-05-21*

It says I'm going to be 5"10 even though I'm at the 89th percentile!

### 4/5 — Ok

*2011-03-30*

I think its okay but im taller than the average 97 so it wont predict me 11 and 10 months but 5 foot 6

### 1/5 — Ummm

*2009-10-13*

Would be better if it had a main menu and was a tad more accurate because my friend found an old sports card of hers and typed in the info: it said 5foot 2 inch she is borderline 6 feet:) good idea though.... Five stars for idea one for accuracy:)

### 1/5 — Bad app

*2009-09-30*

Has my sons height the same for 8, 9 and 10 years of age. Has everybody at a max height of 6' 3". Neat interface but does not work. Try another height predictor

### 5/5 — Sign me Up for Size Me Up

*2009-07-13*

This application takes complicated data and makes it so simple. Now I donlt have to worry that my midget son will actually end up being normal.

### 5/5 — Great app

*2009-07-01*

This is a great app fo nephews all aruond

### 5/5 — Perfect for grandkids

*2009-07-01*

Great app! It's very easy to use. It will be fun to track my grandkids height over the years.

## Frequently asked questions about Size Me Up

### Does Size Me Up have ads?

Size Me Up is ad-free, allowing for an uninterrupted user experience.

### What is the price of Size Me Up?

Size Me Up costs $0.99 and is a one-time purchase.

### What devices is Size Me Up available on?

Size Me Up is available on iPhone and iPod devices.

### How accurate are Size Me Up's predictions?

Predictions are based on US CDC growth chart data and the assumption that individuals stay close to their growth curve. For best results, use the app periodically over a year, not just before or after a growth spurt.

### What age rating does Size Me Up have?

Size Me Up has an age rating of 4+, making it suitable for young children and their parents.

### When was Size Me Up last updated?

Size Me Up was last updated on June 28, 2009, with version 1.0.

### What are the limitations of Size Me Up?

The app's CDC data only shows percentile rankings between 3%-97%. It may not work accurately for children who are very tall or very short for their age.

### How does Size Me Up compare to other height predictors?

Unlike methods that rely on parent height, Size Me Up uses current height, age, gender, and growth chart data, believing children tend to stay on a consistent growth curve.

## Version history (last 1 release)

### 1.0 — 2009-06-28

No release notes.

## Apps similar to Size Me Up

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| [WatchBMI](https://appshunter.io/ios/app/watchbmi/id6514276372) | — | $0.99 | Health & Fitness |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*