Rayyan vs Clerk App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rayyan
This app streamlines systematic literature reviews for researchers, enabling quick article screening and decision-making on mobile devices. It supports offline work and real-time collaboration, significantly reducing review time.
- Offline article screening
- Real-time collaboration
- Quick inclusion decisions
- Reference labeling
- Article filtering
- Configurable settings
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The Most Advanced Systematic Literature Review App If you conduct research, Rayyan is the app for you. It accelerates systematic literature reviews in support of all types of evidence-based research. Developed by researchers, for researchers, Rayyan offers a quick and easy way to screen articles on the go, and it even works offline! Key Features: - Work online for real-time collaboration. - Download your reviews to work on the go or offline. - Swipe left or right to make inclusion decisions quickly. - Label references by selecting or adding labels. - Filter references with the touch of a button. - Configure and save your settings to work however you like. Save Your Valuable Time, Reduce Your Frustration, and Increase Your Productivity Rayyan is designed to guide you through article screening by enabling quick decisions and label applications on each article. You won’t believe how easy it is to use! Researchers report reducing the time spent on their reviews by 50%-80% or more using Rayyan. Enjoying real-time collaboration with fellow researchers has never been easier. Rayyan records every decision for you. The app even functions when you’re offline, so you can always rely on Rayyan to make the most of your valuable time. We welcome your feedback about the app. You can contact us anytime via email at support@rayyan.ai or on Twitter @rayyanapp. Terms of Use: https://www.rayyan.ai/terms-of-service Privacy Policy: https://www.rayyan.ai/privacy_policy/
Clerk App
This app is an adaptive study planner designed for medical students. It integrates question banks, flashcards, review materials, and practice exams into a real-time system that adjusts your daily study plan based on your progress and deadlines. It also offers tools for focus, productivity, and community interaction.
- Adaptive daily study planning
- Unified resource tracking
- Interactive study calendar
- Study groups and community
- Focus and productivity tools
- Pomodoro timer
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Clerk is an all-in-one study planner built specifically for medical students who juggle multiple resources, tight timelines, and high-stakes exams. Clerk brings everything together - your question banks, flashcards, content review, practice exams, and focus time - into one adaptive system that updates in real time as you study. Adaptive Daily Study Planning: - Clerk automatically adjusts your daily study requirements based on: - What you’ve already completed - Your target completion dates - Your remaining workload - Fall behind or get ahead? Clerk recalculates instantly so your plan always stays realistic and achievable. Unified Resource Tracking: - Track all of your external study resources in one place, including: - Question banks - Flashcards - Content review - Practice exams See progress at a glance and know exactly what you need to complete each day to stay on track. Interactive Study Calendar: - Plan smarter with a fully interactive calendar that updates automatically as your goals or output change. - Weekly and monthly views - Color-coded study tasks - Instant updates based on progress and deadlines - No more manual rescheduling - Clerk does the math for you. Study Groups & Community: - Stay connected and motivated with built-in study groups: - Private groups to study with friends and classmates - Public groups to discuss topics with medical students around the world - Ask questions, share insights, and learn collaboratively. You control what you share and who you share it with. Focus & Productivity Tools: - Turn intention into results with Clerk’s Focus tab: - Pomodoro timer for structured study sessions - Flip timer to track focus automatically by flipping your phone - Track total focus time and daily productivity - Optionally share study streaks and focus time with your groups for accountability and motivation. Designed for Medical Students: Whether you’re preparing for boards, shelf exams, or daily coursework, Clerk is designed to reduce planning friction so you can focus on what matters most - learning efficiently and consistently. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Clerk App at 100% against Rayyan's 37%. Clerk App also leads on rating (5.0 vs 3.8) and update cadence (every 3 days vs every 5 weeks). On price, ratings volume, ads and in-app purchases 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. Rayyan sells 13 in-app purchases, starting at $9.99 per month and Clerk App sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Clerk App holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 24 and 19 respectively. Written reviews point the same way: 37% of Rayyan's written reviews are positive against 100% of Clerk App's.
Rayyan ships an update every 5 weeks, Clerk App every 3 days. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.
| Parameter | Rayyan | Clerk App |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (24 ratings) | 5.0 (19 ratings) — better |
| Positive reviews | 37.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 24 — better | 19 |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 36 MB | 47 MB |
| Age rating | 17+ | 4+ |
| Developer | Rayyan Systems, Inc. | Robert Contento |
Customer experience
Rayyan
Clerk App
In-app purchases
Rayyan
- Student Monthly$9.991 Month
- Professional Monthly$14.991 Month
- Student Quarterly$24.993 Months
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- Essential Quarterly$24.993 Months
- Professional Quarterly$39.993 Months
- Advanced Quarterly$39.993 Months
- Student Annual$59.991 Year
- Essential Annual$59.991 Year
- Advanced Quarterly 2 Seats$79.993 Months
- Professional Annual$99.991 Year
- Advanced Annual$99.991 Year
- Advanced Quarterly 4 Seats$159.993 Months
- Advanced Annual 5 Seats$499.991 Year
Clerk App
- Clerk App Monthly Subscription$4.991 Month
- Clerk App Yearly Subscription$19.991 Year
- Clerk App Lifetime Plan$29.99









