# IAP Iowa vs GoTall

The clearest difference is review sentiment: IAP Iowa at 100% against GoTall's 21%. IAP Iowa also leads on in-app purchases (none vs 10) and rating (5.0 vs 4.6). GoTall's advantage is update cadence (weekly vs every 36 months) and ratings volume (6.8K vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GoTall sells 10 in-app purchases, starting at $1.99 per 7 days. IAP Iowa asks for nothing beyond the download.

IAP Iowa holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GoTall has 6.8K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of IAP Iowa's written reviews are positive against 21% of GoTall's.

IAP Iowa ships an update every 36 months, GoTall weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | IAP Iowa | GoTall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/iap-iowa/id1496520188/reviews)** | [4.6 (6.8K ratings)](https://appshunter.io/ios/app/gotall-height-predictor/id6747467975/reviews) |
| Number of ratings | 3 | **6.8K** |
| Positive reviews | **100.0% of reviews** | 21.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 36 months | **Weekly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 124 MB | 147 MB |
| Requires iOS | **14.0** | 15.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Innovative Athletics Sports Performance, LLC](https://appshunter.io/developer/1496520187) | [Grow Labs LLC](https://appshunter.io/developer/1857104579) |

## What reviewers say

### IAP Iowa

[App page](https://appshunter.io/ios/app/iap-iowa/id1496520188)

Plan and schedule your fitness classes directly from your device. View class schedules, sign up for sessions, and access studio location information. Optimize your time and convenience for booking workouts.

**Highlights:** View class schedules, Sign up for classes, Studio location information, Schedule management, Device-based booking

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### GoTall

[App page](https://appshunter.io/ios/app/gotall-height-predictor/id6747467975)

This app predicts your maximum potential height using scientific data and personal factors like genetics, sleep, and activity. It provides a personalized growth plan with exercises, nutrition analysis, and lifestyle tracking to support your development. Premium features offer advanced tools and customized plans.

**Highlights:** Scientific height prediction, Personalized growth plan, Daily exercises, Nutrition analysis, Lifestyle tracking, Puberty stage analysis

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Weekly Access | $3.99 | per 7 days |
| GoTall Access | $4.99 | per 7 days |
| GoTall Weekly Plan | $4.99 | per 7 days |
| Weekly Access | $5.99 | per 7 days |
| Yearly Access | $9.99 | per year |
| Yearly Access | $34.99 | per year |
| Yearly Access | $59.99 | per year |
| GoTall Yearly Plan | $59.99 | per year |
| GoTall Yearly Pro | $59.99 | per year |

**What reviewers like**

- 👍 Great app overall
- 🚀 Seeing benefits already
- 💡 Provided necessary structure for growth

**What reviewers complain about**

- 💰 Paywall/cost to access full features
- 🤔 Doesn't reveal results without payment
- 🤔 Concerns about data privacy

**Reported bugs**

- Paywall blocks access to core functionality

**Requested features**

- Free access to height prediction results
- More transparency about data usage


## Frequently asked questions

### Is IAP Iowa free?

IAP Iowa is free to download, with no in-app purchases.

### Is GoTall free?

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

### Which has better reviews, IAP Iowa or GoTall?

IAP Iowa is rated higher. IAP Iowa averages 5.0 out of 5 from 3 ratings, while GoTall averages 4.6 from 6.8K ratings.

### Do IAP Iowa or GoTall have ads?

Both IAP Iowa and GoTall show ads.

### Which is updated more often, IAP Iowa or GoTall?

IAP Iowa ships an update every 36 months, and GoTall weekly. Most recently, IAP Iowa was updated on November 3, 2026 and GoTall on November 4, 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.*