# HeightGPT vs GrowMaxx

The clearest difference is ads: HeightGPT at none against GrowMaxx's shown. GrowMaxx's advantage is rating (4.7 vs 4.4) and update cadence (every 3 days vs weekly). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. HeightGPT sells 2 in-app purchases, starting at $3.99 per 7 days and GrowMaxx sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GrowMaxx holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: GrowMaxx has 71 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 83% of HeightGPT's written reviews are positive against 94% of GrowMaxx's.

HeightGPT ships an update weekly, GrowMaxx every 3 days. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | HeightGPT | GrowMaxx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/heightgpt/id6741367617/reviews) | **[4.7 (71 ratings)](https://appshunter.io/ios/app/growmaxx-height-predictor/id6753605862/reviews)** |
| Number of ratings | 14 | **71** |
| Positive reviews | 83.3% of reviews | **93.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 56 MB | 55 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Boulevard Legacy LLC](https://appshunter.io/developer/1788132576) | [erdem sengun](https://appshunter.io/developer/1875764238) |

## What reviewers say

### HeightGPT

[App page](https://appshunter.io/ios/app/heightgpt/id6741367617)

This AI-powered app helps you track and optimize your height growth. It offers personalized training, habit optimization, and predictive analytics based on various factors like genetics and lifestyle. Visualize your progress and achieve your growth potential.

**Highlights:** AI-powered height predictions, Growth visualizations, Personalized training plans, Growth habit optimization, Parental and genetics analysis, Smart to-do list for growth

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| One Time | $29.99 | one-time |


### GrowMaxx

[App page](https://appshunter.io/ios/app/growmaxx-height-predictor/id6753605862)

This AI-powered application helps users discover their growth potential through personalized routines, posture improvement exercises, and smart reminders. It offers daily plans to stretch smarter and track progress, aiming to enhance physical alignment and fitness.

**Highlights:** Height prediction with AI insights, Personalized daily stretch and workout routines, Progress tracking and regular updates, Posture improvement exercises, Smart reminders for consistency

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Height Increase | $4.99 | per 7 days |
| 1 Week Height Increase | $7.49 | per 7 days |
| 1 Year Height Boost - Offer | $24.99 | per year |
| 52 Week Height Increase | $59.99 | per year |
| 52 Week Height Increase | $59.99 | per year |


## Frequently asked questions

### Is HeightGPT free?

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

### Is GrowMaxx free?

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

### Which has better reviews, HeightGPT or GrowMaxx?

GrowMaxx is rated higher. HeightGPT averages 4.4 out of 5 from 14 ratings, while GrowMaxx averages 4.7 from 71 ratings.

### Do HeightGPT or GrowMaxx have ads?

GrowMaxx shows ads; HeightGPT does not.

### Which is updated more often, HeightGPT or GrowMaxx?

HeightGPT ships an update weekly, and GrowMaxx every 3 days. Most recently, HeightGPT was updated on September 27, 2026 and GrowMaxx on October 12, 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.*