CRYS vs Peter the Protocol Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CRYS
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App is intended for use to collect patient reported outcomes relating to a clinical trial. Patients must be given accounts by a participating site in order to log in to the app.
Peter the Protocol Reader
This AI assistant streamlines clinical research by quickly converting protocols into actionable insights. It's designed to enhance the quality and efficiency of research delivery for clinical sites.
- Protocol to practical insights
- AI-powered assistance
- High-quality research delivery
- Secure and trusted
- Confidence in research
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Peter is the AI-assistant purpose-built for clinical research. Secure and trusted by study sponsors, Peter is designed to help you deliver high-quality research with confidence. Go from protocol to practical in seconds.
Screenshots
Verdict
The clearest difference is update cadence: Peter the Protocol Reader at every 3 weeks against CRYS's every 2 months. CRYS's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CRYS ships an update every 2 months, Peter the Protocol Reader every 3 weeks. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.
| Parameter | CRYS | Peter the Protocol Reader |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 85 MB | 108 MB |
| Age rating | 12+ | 17+ |
| Developer | ERT,INC | Care Access |
In-app purchases
CRYS
No in-app purchases
Peter the Protocol Reader
No in-app purchases
