# CogState vs Rave eConsent

The clearest difference is ratings volume: Rave eConsent at 6 against CogState's 1. CogState's advantage is iOS requirement (9.0 vs 15.0). On price, rating, update cadence and ads 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 CogState against 5.0 for Rave eConsent. That said, the two scores are not equally well evidenced: Rave eConsent has 6 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | CogState | Rave eConsent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cogstate/id599475522/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/rave-econsent/id1433820163/reviews) |
| Number of ratings | 1 | **6** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 225 MB | 14 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 17+ | 12+ |
| Developer | [CogState Inc](https://appshunter.io/developer/599475525) | [Medidata Solutions Worldwide](https://appshunter.io/developer/554170117) |

## What reviewers say

### CogState

[App page](https://appshunter.io/ios/app/cogstate/id599475522)

This academically oriented software offers researchers a powerful and sensitive method for testing cognition. It utilizes culture-neutral stimuli to detect cognitive changes in subjects over time, with validity demonstrated in numerous peer-reviewed articles.

**Highlights:** Academically oriented cognitive testing, Sensitive detection of cognitive change, Culture-neutral stimuli, Validated in peer-reviewed articles, Baseline and periodic retesting

**Features:** macOS Compatibility

**In-app purchases:** none


### Rave eConsent

[App page](https://appshunter.io/ios/app/rave-econsent/id1433820163)

This application facilitates clinical trial participation by providing patients with interactive tools to understand research details and risks. It captures electronic signatures for informed consent and helps streamline site operations by tracking consents remotely and reducing audit risks.

**Highlights:** Interactive patient education tools, Electronic signature capture, Remote consent tracking, Secure communication and identity verification, Consent amendment management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CogState free?

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

### Is Rave eConsent free?

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

### Which has better reviews, CogState or Rave eConsent?

CogState and Rave eConsent are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do CogState or Rave eConsent have ads?

Neither CogState nor Rave eConsent shows ads.

### Which is updated more often, CogState or Rave eConsent?

CogState ships an update every 2 months, and Rave eConsent every 2 months. Most recently, CogState was updated on November 1, 2026 and Rave eConsent on November 11, 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.*