# HeightGPT vs Standly

HeightGPT and Standly both sit at 4.4 stars, but that hides the real split: 83% of HeightGPT's written reviews are positive against 29% of Standly's. HeightGPT also leads on update cadence (weekly vs every 3 weeks). Standly's advantage is ratings volume (112 vs 14). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. HeightGPT sells 2 in-app purchases, starting at $3.99 per 7 days and Standly sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Standly holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Standly has 112 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 83% of HeightGPT's written reviews are positive against 29% of Standly's, so the app with the better star average is not the one people write more warmly about.

HeightGPT ships an update weekly, Standly every 3 weeks. The most recent releases landed on June 1, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | HeightGPT | Standly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/heightgpt/id6741367617/reviews) | **[4.6 (112 ratings)](https://appshunter.io/ios/app/standly-predict-your-height/id6752656070/reviews)** |
| Number of ratings | 14 | **112** |
| Positive reviews | **83.3% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 56 MB | 102 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Boulevard Legacy LLC](https://appshunter.io/developer/1788132576) | [Buy Beaver Technologies](https://appshunter.io/developer/1802270930) |

## 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 |


### Standly

[App page](https://appshunter.io/ios/app/standly-predict-your-height/id6752656070)

This app provides a personalized height prediction and growth tracking experience. It analyzes lifestyle factors like genetics, posture, nutrition, and sleep to offer a dynamic estimate of potential height and a tailored daily routine to support natural growth.

**Highlights:** Dynamic height prediction model, Personalized daily routine for posture, Lifestyle guidance for sleep and nutrition, Ongoing progress tracking, Growth habit optimization

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standly Weekly | $4.99 | per 7 days |
| Standly Premium | $24.99 | per year |
| Standly Yearly | $24.99 | per year |
| Standly Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is HeightGPT free?

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

### Is Standly free?

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

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

Standly is rated higher. HeightGPT averages 4.4 out of 5 from 14 ratings, while Standly averages 4.6 from 112 ratings.

### Do HeightGPT or Standly have ads?

Neither HeightGPT nor Standly shows ads.

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

HeightGPT ships an update weekly, and Standly every 3 weeks. Most recently, HeightGPT was updated on June 1, 2026 and Standly on September 26, 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.*