# Cor4 vs Impruvon C3

The clearest difference is ads: Impruvon C3 at none against Cor4's shown. Impruvon C3 also leads on monetization model (free vs ad-supported). Cor4's advantage is ratings volume (5 vs 1). 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 Impruvon C3. That said, the two scores are not equally well evidenced: Cor4 has 5 ratings behind it against 1, so its average is the more settled of the two.

Cor4 ships an update monthly, Impruvon C3 every 3 weeks. The most recent releases landed on October 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Cor4 | Impruvon C3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/cor4/id1499517553/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/impruvon-c3/id6505116458/reviews) |
| Number of ratings | **5** | 1 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 123 MB | 44 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Cor4 LLC](https://appshunter.io/developer/1499517552) | [Impruvon](https://appshunter.io/developer/1554988898) |

## 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


### Impruvon C3

[App page](https://appshunter.io/ios/app/impruvon-c3/id6505116458)

This app helps you track your mood, manage daily routines, and stay connected for improved mental wellness. It offers daily positive affirmations and reminders for appointments and medications.

**Highlights:** Mood tracking, Daily routine management, Appointment reminders, Medication reminders, Positive affirmations, Goal achievement focus

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

**In-app purchases:** none


## Frequently asked questions

### Is Cor4 free?

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

### Is Impruvon C3 free?

Impruvon C3 is free to download, with no in-app purchases.

### Which has better reviews, Cor4 or Impruvon C3?

Cor4 and Impruvon C3 are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do Cor4 or Impruvon C3 have ads?

Cor4 shows ads; Impruvon C3 does not.

### Which is updated more often, Cor4 or Impruvon C3?

Cor4 ships an update monthly, and Impruvon C3 every 3 weeks. Most recently, Cor4 was updated on October 14, 2026 and Impruvon C3 on September 22, 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.*