Rayyan vs. Covidence: Choosing a Screening Tool

Screening hundreds or thousands of records by hand in a spreadsheet is slow and error-prone. Both tools below are built specifically for systematic review screening, with blind dual-review and conflict resolution built in.

Rayyan

Free for the core screening workflow, widely used, with a machine-learning feature that helps prioritize likely-relevant records as you screen. Import from most reference managers and databases is straightforward. A strong default choice, especially for student researchers without a review-management budget.

Covidence

Paid (often available through institutional Cochrane affiliation or library subscription), with a more complete end-to-end workflow — screening, full-text review, data extraction, and risk-of-bias assessment all in one platform, rather than screening alone. Stronger for teams running the full review pipeline in one place.

How to choose

• Screening only, no budget → Rayyan.
• Want the full pipeline (screening through extraction and risk of bias) in one tool, and have institutional access → Covidence.
• Cochrane review specifically → check your review group's expected tools first; some have preferences.

Both support dual independent screening with conflict resolution — a PRISMA 2020 expectation, not just a nice-to-have.