Catchii vs Rayyan

Catchii is a web tool for screening large scientific-literature datasets in systematic reviews. It covers duplicate detection, title-and-abstract screening, full-text analysis, disagreement resolution, data extraction and PRISMA flowchart generation. References can be imported from PubMed, Scopus, Web of Science, OVID databases, CSV files and reference-management software. The duplicate detector identifies records with highly similar titles or abstracts for review. Multiple reviewers can be assigned roles such as reviewer, conflict-resolution reviewer or manager, and screening works offline on computers, tablets and smartphones. Customizable grouped, color-coded keywords mark inclusion, exclusion or topic terms. The Auto Reviewer uses AI to assist first-phase decisions with inclusion or exclusion explanations; uploaded records are sent to OpenAI for processing. Exports work with EndNote, Zotero or Mendeley and can include PDFs and a PRISMA flowchart. Catchii has a free plan with no subscription fees, trial periods, paid upgrades or advertisements.

Rayyan is a platform for teams carrying out systematic evidence reviews, with workflows intended to be transparent, auditable, and reproducible. Its process spans reference import, collaboration, deduplication, title and abstract screening, full-text screening, data extraction, risk-of-bias assessment, and reporting. ResearchPilot AI Reviewer screens articles against criteria set by the user and gives decisions with reasoning notes. The Analyzer suggests inclusion or exclusion with justification, while the researcher retains final decision-making. ResearchPilot can also extract answers to custom questions from PDFs and metadata, highlight relevant passages, and let users inspect the answers. References are imported from exported files rather than a direct database connection. The API offers programmatic access to reviews, references, decisions, and metadata, plus workflow automation and external integrations. Rayyan is available on Android, iOS, web, and through an API. The Free plan allows three active reviews and two free reviewers; paid options start at $8.33 a month per seat, billed annually. Free mobile access is limited; Essential and higher provide unlimited mobile access.