Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Apodex records 9,348 monthly visits with -87.3% month-over-month growth and Freemium pricing. Rayyan records 1,116,437 monthly visits with +7.9% growth and Freemium pricing.

Deep-research AI that verifies every reasoning step before it answers
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | apodex.ai | rayyan.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 9.35K (9,348) | 1.12M (1,116,437) |
| MoM Traffic Delta | -64.17K (-87.3%) | +81.92K (+7.9%) |
| Primary Market & Share | 🇺🇸 United States (81.8%) | 🇺🇸 United States (18%) |
| Direct Visits / mo | 4.64K | 677.88K |
| User Rating | 4.2 | 4.5 |
| Supported Platforms | Website | Website |

Deep-research AI that verifies every reasoning step before it answers
See the intermediate steps and checks behind a conclusion, so a brief can be audited rather than taken on faith.
Claims are tied to sources inside the generated brief, making follow-up verification straightforward.
Fork a completed inquiry to explore a sub-question or alternative angle while keeping the original reasoning intact.
Saved inquiries are searchable in full text, so prior research becomes a reusable knowledge base.
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
The Systematic Auto-Resolver deduplicates up to 200,000 references using your own inclusion and exclusion protocol with one click.
ResearchPilot delivers zero-shot relevance ratings, an AI Analyzer, an AI Reviewer, and auto-extraction to speed up search, screening, and data capture.
Work through title, abstract, and full-text screening with inclusion and exclusion tagging, conflict resolution, and blinded reviewer modes.
Capture structured study data with configurable extraction fields, apply PICO frameworks, and export results with auto-generated PRISMA diagrams.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.

Moonshot AI's long-context assistant for research, coding, and agentic work

Free / Open-sourceProvides a completely free and open academic search database, but lacks collaborative literature review screening tools.
Free / Open-sourceProvides a completely free and open academic search database, but lacks collaborative literature review screening tools.

SpecialistGreat for finding scientific agreement and evidence-backed answers, but lacks dedicated screening queues and systematic review extraction forms.
SpecialistGreat for finding scientific agreement and evidence-backed answers, but lacks dedicated screening queues and systematic review extraction forms.

SpecialistExcellent for reading, chatting with, and summarizing individual papers, but less structured for multi-reviewer systematic review screening.
SpecialistExcellent for reading, chatting with, and summarizing individual papers, but less structured for multi-reviewer systematic review screening.
Computational knowledge engine for expert answers
Stronger automated data extraction and evidence synthesis from papers, but less focused on collaborative title and abstract screening workflows.
Stronger automated data extraction and evidence synthesis from papers, but less focused on collaborative title and abstract screening workflows.
Chat with any PDF, video, or website and get cited answers in seconds
SpecialistOffers powerful citation analysis and smart citation metrics, but is less tailored for full PRISMA systematic review workflows.
SpecialistOffers powerful citation analysis and smart citation metrics, but is less tailored for full PRISMA systematic review workflows.

SpecialistVisualizes citation networks and paper relationships wonderfully, but lacks Rayyan's screening, tagging, and exclusion tracking features.
SpecialistVisualizes citation networks and paper relationships wonderfully, but lacks Rayyan's screening, tagging, and exclusion tracking features.
SpecialistProvides intuitive visual maps of academic literature connections, but doesn't support systematic review screening or data extraction.
SpecialistProvides intuitive visual maps of academic literature connections, but doesn't support systematic review screening or data extraction.
Domain-specific AI agents for innovation, R&D, and intellectual property
Domain-specific AI agents for innovation, R&D, and intellectual property