Clinical Trials 365 vs Protolinq
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clinical Trials 365
Discover local clinical trial opportunities and explore new treatment options. This platform connects you with research organizations, allowing you to browse studies, check eligibility, and get in touch directly from your phone. It's a free and secure way to find and participate in clinical research.
- Browse clinical trials by condition
- Search by location and study category
- Save favorite studies
- Contact research organizations
- Get new study notifications
- Verified organization listings
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Paid Clinical Trial is the easiest way to discover clinical trial opportunities in your area. Whether you're looking to participate in a study or explore new treatment options, our platform connects you instantly with clinical research organizations conducting studies across the country. Designed for simplicity, trust, and speed, Paid Clinical Trial helps you browse available studies, check eligibility, and contact research organizations — all from your phone. Key Features: • Browse upcoming and enrolling clinical trials across multiple conditions • Search by location, condition, or study category • Save studies to your favorites for quick access • Follow research organizations and easily get in touch with their teams • Get notified when new relevant studies become available in your area • Clean and simple interface for fast navigation • Verified organizations with up-to-date listings • 100% free to use Paid Clinical Trial makes finding and joining clinical studies simple, accessible, and secure. Discover opportunities, learn more about upcoming and enrolling clinical trials, and take the first step toward participating — all in one easy-to-use app.
Protolinq
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ProtoLinq helps you discover clinical studies you may qualify for and stay organized as you explore research opportunities. Browse active studies, review key eligibility details, and find trials near you in a clear, mobile-friendly experience. ProtoLinq makes it easier to understand study options, follow referral progress, and keep important research conversations in one place. Features: - Discover clinical studies near your location - Review study details and eligibility information - Track referrals and follow-up activity - Stay organized with in-app messaging and updates - Manage your profile and research interests in one app
Screenshots
Verdict
The clearest difference is update cadence: Protolinq at every 6 days against Clinical Trials 365's every 4 months. 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.
Clinical Trials 365 ships an update every 4 months, Protolinq every 6 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Clinical Trials 365 | Protolinq |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (23 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 4 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 4 MB | 35 MB |
| Age rating | 17+ | 17+ |
| Developer | Paid Trials, Inc. | Digital Auxilius |
In-app purchases
Clinical Trials 365
No in-app purchases
Protolinq
No in-app purchases
Questions
Is Clinical Trials 365 free?
Is Protolinq free?
Do Clinical Trials 365 or Protolinq have ads?
Which is updated more often, Clinical Trials 365 or Protolinq?
Other comparisons
