# Heightometer vs Maxx AI

The clearest difference is price: Maxx AI at Free against Heightometer's $0.99. Heightometer's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 15.6). On update cadence, ads and device support there is nothing between them.

Maxx AI is free to download; Heightometer costs $0.99 up front. Maxx AI sells 3 in-app purchases, starting at $6.99 per 7 days. Heightometer asks for nothing beyond the download.

Heightometer ships an update every 2 days, Maxx AI every 3 days. Both last shipped on October 11, 2026.

## The numbers

| Metric | Heightometer | Maxx AI |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/heightometer-height-predictor/id1620546792/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | Paid | — |
| Size | 43 MB | 65 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kartik Khatana](https://appshunter.io/developer/1664325011) | [Ankit Priyadarshi](https://appshunter.io/developer/1824085646) |

## What reviewers say

### Heightometer

[App page](https://appshunter.io/ios/app/heightometer-height-predictor/id1620546792)

This application uses scientific and mathematical calculations based on a child's growth rate to predict their approximate future height. It provides future height estimates in both inches and centimeters for children aged 8 to 18.

**Highlights:** Future height prediction, Growth rate analysis, Scientific calculations, Mathematical formulas, Height in inches and centimeters, Child age range 8-18

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Maxx AI

[App page](https://appshunter.io/ios/app/maxx-ai-maximize-looks/id6754365800)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $6.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Heightometer free?

Heightometer costs $0.99, with no in-app purchases.

### Is Maxx AI free?

Maxx AI is free to download, with in-app purchases available.

### Do Heightometer or Maxx AI have ads?

Neither Heightometer nor Maxx AI shows ads.

### Which is updated more often, Heightometer or Maxx AI?

Heightometer ships an update every 2 days, and Maxx AI every 3 days. Most recently, Heightometer was updated on October 11, 2026 and Maxx AI on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*