# Cor4 vs ISI Elite Training

The clearest difference is ads: ISI Elite Training at none against Cor4's shown. ISI Elite Training also leads on ratings volume (6.2K vs 5) and monetization model (free vs ad-supported). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Cor4 against 5.0 for ISI Elite Training. That said, the two scores are not equally well evidenced: ISI Elite Training has 6.2K ratings behind it against 5, so its average is the more settled of the two.

Cor4 ships an update monthly, ISI Elite Training every 3 weeks. The most recent releases landed on June 7, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Cor4 | ISI Elite Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cor4/id1499517553/reviews)** | [5.0 (6.2K ratings)](https://appshunter.io/ios/app/isi-elite-training/id6443831308/reviews) |
| Number of ratings | 5 | **6.2K** |
| Positive reviews | — | 88.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 123 MB | 59 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cor4 LLC](https://appshunter.io/developer/1499517552) | [Geisler Young](https://appshunter.io/developer/369530382) |

## What reviewers say

### Cor4

[App page](https://appshunter.io/ios/app/cor4/id1499517553)

Easily plan and schedule your fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location details. Optimize your time and enjoy the convenience of managing your fitness activities on the go.

**Highlights:** View class schedules, Sign up for classes, Access studio location, Schedule management, Mobile convenience

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ISI Elite Training

[App page](https://appshunter.io/ios/app/isi-elite-training/id6443831308)

Manage your fitness account, view class schedules, and book reservations. Purchase training sessions to enhance your health, strength, and confidence. Elevate your workouts with unique fitness programs.

**Highlights:** Account management, View class schedule, View reservations, Purchase sessions, Workout enhancement

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great community
- 👍 Excellent trainers and coaches
- 🚀 Responsive app
- 💪 Challenging and effective workouts
- 🌟 Transformative experience

**What reviewers complain about**

- 🐛 Issues with class count tracking
- 🔍 Small text in app difficult to read

**Reported bugs**

- Class count not updating correctly
- Booking classes not working in new app

**Requested features**

- Add total sessions remaining in subscription
- Improve app readability and accessibility


## Frequently asked questions

### Is Cor4 free?

Cor4 is free to download, with no in-app purchases.

### Is ISI Elite Training free?

ISI Elite Training is free to download, with no in-app purchases.

### Which has better reviews, Cor4 or ISI Elite Training?

Cor4 is rated higher. Cor4 averages 5.0 out of 5 from 5 ratings, while ISI Elite Training averages 5.0 from 6.2K ratings.

### Do Cor4 or ISI Elite Training have ads?

Cor4 shows ads; ISI Elite Training does not.

### Which is updated more often, Cor4 or ISI Elite Training?

Cor4 ships an update monthly, and ISI Elite Training every 3 weeks. Most recently, Cor4 was updated on June 7, 2026 and ISI Elite Training 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.*