# iFour Core vs Prehab U

The clearest difference is in-app purchases: Prehab U at none against iFour Core's 2. Prehab U also leads on device support (4 vs 2). iFour Core's advantage is ratings volume (28 vs 4) and iOS requirement (11.0 vs 15.5). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. iFour Core sells 2 in-app purchases, starting at $5.99 per month. Prehab U asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for iFour Core against 5.0 for Prehab U. That said, the two scores are not equally well evidenced: iFour Core has 28 ratings behind it against 4, so its average is the more settled of the two.

iFour Core ships an update every 2 months, Prehab U monthly. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | iFour Core | Prehab U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (28 ratings)](https://appshunter.io/ios/app/ifour-core/id1525317554/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/prehab-u/id6470944723/reviews) |
| Number of ratings | **28** | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 39 MB | 159 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ifour.life, LLC](https://appshunter.io/developer/1525317556) | [Athletes Prehab LLC](https://appshunter.io/developer/1714502521) |

## What reviewers say

### iFour Core

[App page](https://appshunter.io/ios/app/ifour-core/id1525317554)

This app offers a personalized core workout program designed by physical therapists. It adapts to your individual anatomy and fitness level, providing daily workouts under 10 minutes with video demonstrations. Access nutrition guides and trainer support as a member.

**Highlights:** Personalized core workout program, Physical therapy approved exercises, Daily workouts under 10 minutes, Video demonstrations of exercises, Nutrition guides and support, Fitness test for customized plans

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annually | $29.99 | per year |


### Prehab U

[App page](https://appshunter.io/ios/app/prehab-u/id6470944723)

Access personalized workout programs and track your fitness journey. Monitor workouts, nutrition, habits, and measurements with coach guidance. Connect with communities and earn badges for achievements.

**Highlights:** Access training plans and track workouts, Follow exercise and workout videos, Track meals and food choices, Monitor daily habits and progress, Message your coach in real-time, Join digital communities for motivation, Track body measurements and progress photos

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is iFour Core free?

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

### Is Prehab U free?

Prehab U is free to download, with no in-app purchases.

### Which has better reviews, iFour Core or Prehab U?

iFour Core and Prehab U are both rated 5.0 out of 5 on the App Store, from 28 and 4 ratings respectively.

### Do iFour Core or Prehab U have ads?

Neither iFour Core nor Prehab U shows ads.

### Which is updated more often, iFour Core or Prehab U?

iFour Core ships an update every 2 months, and Prehab U monthly. Most recently, iFour Core was updated on October 4, 2026 and Prehab U on October 2, 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.*