EviSynth vs Rayyan

EviSynth is a platform for evidence syntheses and systematic reviews, available on Android, iOS, and the web. Its screening workflow uses a language model to assess abstracts against PICO criteria and suggest inclusion or exclusion. Built-in risk-of-bias tools support RoB 2, ROBINS-I, and custom checklists. Teams can invite collaborators, resolve conflicts, and track who screened each item and when. The AI Insights tab provides summaries, keyword extraction, and bias hints. References can be imported as EndNote XML or PubMed NBIB files, and the screening interface is designed for touch-screen use on mobile devices. The maker describes access as free for academic use, with no trials or subscriptions, and says no credit card is required to start. The platform is open source and presented for researchers, including students and faculty conducting rapid or full systematic reviews. The listed academic plan includes unlimited collaborators. The homepage credits Milad Mirmoghtadaei, M.D. as developer.

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.