# Patient Cloud vs CRYS

Patient Cloud and CRYS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Patient Cloud ships an update every 5 weeks, CRYS every 2 months. The most recent releases landed on October 19, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Patient Cloud | CRYS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (113 ratings)](https://appshunter.io/ios/app/patient-cloud/id1361329140/reviews)** | — |
| Number of ratings | **113** | — |
| Positive reviews | 6.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 84 MB | 85 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Medidata Solutions Worldwide](https://appshunter.io/developer/554170117) | [ERT, INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### Patient Cloud

[App page](https://appshunter.io/ios/app/patient-cloud/id1361329140)

This app streamlines patient engagement and data collection for clinical trials. It allows patients to easily participate in studies by answering questionnaires on their mobile devices, while healthcare professionals and researchers can manage invitations and access real-time data.

**Highlights:** ePRO, ClinRO, and site mode functionality, Patient engagement and data management, Clinical trial participation via mobile, Questionnaire completion from home, Patient invitation and health data collection, Integration with Medidata Rave

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

**In-app purchases:** none


### CRYS

[App page](https://appshunter.io/ios/app/crys-301-302/id6742195649)

**In-app purchases:** none


## Frequently asked questions

### Is Patient Cloud free?

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

### Is CRYS free?

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

### Do Patient Cloud or CRYS have ads?

Neither Patient Cloud nor CRYS shows ads.

### Which is updated more often, Patient Cloud or CRYS?

Patient Cloud ships an update every 5 weeks, and CRYS every 2 months. Most recently, Patient Cloud was updated on October 19, 2026 and CRYS on October 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.*