# Rayyan vs IISE

The clearest difference is in-app purchases: IISE at none against Rayyan's 14. Rayyan's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Rayyan sells 13 in-app purchases, starting at $9.99 per month. IISE asks for nothing beyond the download.

## The numbers

| Metric | Rayyan | IISE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (23 ratings)](https://appshunter.io/ios/app/rayyan/id1581620841/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 37.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 51 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Rayyan Systems, Inc.](https://appshunter.io/developer/1581620843) | [Institute of Industrial and Systems Engineers Inc](https://appshunter.io/developer/1456159064) |

## 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 |


### IISE

[App page](https://appshunter.io/ios/app/iise/id6755614743)

**In-app purchases:** none


## Frequently asked questions

### Is Rayyan free?

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

### Is IISE free?

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

### Do Rayyan or IISE have ads?

IISE shows ads; Rayyan does not.

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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.*