# Rayyan vs Clerk App

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.

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 20 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 23, 2026 respectively.

## The numbers

| Metric | Rayyan | Clerk App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (24 ratings)](https://appshunter.io/ios/app/rayyan/id1581620841/reviews) | **[5.0 (20 ratings)](https://appshunter.io/ios/app/clerk-app/id6758461193/reviews)** |
| Number of ratings | **24** | 20 |
| Positive reviews | 37.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 36 MB | 47 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Rayyan Systems, Inc.](https://appshunter.io/developer/1581620843) | [Robert Contento](https://appshunter.io/developer/1873040995) |

## What reviewers say

### Rayyan

[App page](https://appshunter.io/ios/app/rayyan/id1581620841)

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.

**Highlights:** Offline article screening, Real-time collaboration, Quick inclusion decisions, Reference labeling, Article filtering, Configurable settings

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Monthly | $9.99 | per month |
| Professional Monthly | $14.99 | per month |
| Student Quarterly | $24.99 | per 3 months |
| Essential Quarterly | $24.99 | per 3 months |
| Professional Quarterly | $39.99 | per 3 months |
| Advanced Quarterly | $39.99 | per 3 months |
| Student Annual | $59.99 | per year |
| Essential Annual | $59.99 | per year |
| Advanced Quarterly 2 Seats | $79.99 | per 3 months |
| Professional Annual | $99.99 | per year |
| Advanced Annual | $99.99 | per year |
| Advanced Quarterly 4 Seats | $159.99 | per 3 months |
| Advanced Annual 5 Seats | $499.99 | per year |


### Clerk App

[App page](https://appshunter.io/ios/app/clerk-app/id6758461193)

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.

**Highlights:** Adaptive daily study planning, Unified resource tracking, Interactive study calendar, Study groups and community, Focus and productivity tools, Pomodoro timer

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clerk App Monthly Subscription | $4.99 | per month |
| Clerk App Yearly Subscription | $19.99 | per year |
| Clerk App Lifetime Plan | $29.99 | one-time |


## Frequently asked questions

### Is Rayyan free?

Rayyan is free to download, with in-app purchases available.

### Is Clerk App free?

Clerk App is free to download, with in-app purchases available.

### Which has better reviews, Rayyan or Clerk App?

Clerk App is rated higher. Rayyan averages 3.8 out of 5 from 24 ratings, while Clerk App averages 5.0 from 20 ratings.

### Do Rayyan or Clerk App have ads?

Neither Rayyan nor Clerk App shows ads.

### Which is updated more often, Rayyan or Clerk App?

Rayyan ships an update every 5 weeks, and Clerk App every 3 days. Most recently, Rayyan was updated on October 21, 2026 and Clerk App on October 23, 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.*