Compara.cat records 3,840 monthly visits with -58.9% month-over-month growth and Free pricing. Paperguide records 371,972 monthly visits with -2.9% growth and Freemium pricing.
Catalan-language price tracker that verifies whether an Amazon discount is real
AI-native workspace for literature reviews and auditable systematic reviews
| Dimension / Metric | ||
|---|---|---|
| Official Domain | compara.cat | paperguide.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 3.84K (3,840) | 371.97K (371,972) |
| MoM Traffic Delta | -5.5K (-58.9%) | -11.05K (-2.9%) |
| Primary Market & Share | 🇪🇸 Spain (66.4%) | 🇺🇸 United States (25.6%) |
| Direct Visits / mo | 1.53K | 121.59K |
| User Rating | 4 | 4.4 |
| Supported Platforms | Website | Website |
Catalan-language price tracker that verifies whether an Amazon discount is real
Paste an Amazon product link and the site compares the current price against its tracked historical average to tell you whether an advertised discount is genuine or inflated.
Prices across the covered categories are checked every day, so comparisons reflect real movement rather than a single snapshot taken once.
Follow any Amazon.es product and receive an email when the price actually falls. No account creation is required, and unsubscribing is possible from every message.
The site summarises what buyers report in reviews so you can understand real-world pros and cons without reading hundreds of individual opinions.
AI-native workspace for literature reviews and auditable systematic reviews
Ask a research question in plain language and get a synthesized answer drawn from PubMed, arXiv, OpenAlex and Semantic Scholar, with every claim linked to its source paper.
Run PRISMA-style reviews with a predefined protocol, recorded screening decisions, dual independent reviewers and a conflict resolver, and a PRISMA diagram generated from your actual counts.
Import from Zotero or Mendeley, add papers by DOI, and get metadata and open-access PDFs fetched automatically, with annotations and notes that feed every other workflow.
Define custom extraction columns and have AI fill them across many papers, with each value linking back to the sentence it came from, exportable to CSV or Excel.
Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field
Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field
SpecialistSuperior for quick evidence-based academic search, but less of a comprehensive writing and reference suite.
SpecialistSuperior for quick evidence-based academic search, but less of a comprehensive writing and reference suite.
Offers robust PDF analysis and literature search workspaces, but lacks advanced systematic review screening workflows.
Offers robust PDF analysis and literature search workspaces, but lacks advanced systematic review screening workflows.
Stronger automated evidence synthesis and systematic review extraction, but less focused on end-to-end reference management.
Stronger automated evidence synthesis and systematic review extraction, but less focused on end-to-end reference management.
Stronger AI academic writing and autocomplete assistance, but less comprehensive for systematic literature mapping.
Stronger AI academic writing and autocomplete assistance, but less comprehensive for systematic literature mapping.
SpecialistIndustry standard for systematic review screening and deduplication, but weaker on AI writing generation.
SpecialistIndustry standard for systematic review screening and deduplication, but weaker on AI writing generation.
SpecialistExcellent smart citation analysis to verify if papers support or dispute claims, but narrower writing capabilities.
SpecialistExcellent smart citation analysis to verify if papers support or dispute claims, but narrower writing capabilities.
Free / Open-sourceFree visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
Free / Open-sourceFree visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
SpecialistUnmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
SpecialistUnmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
An AI shopping agent that shortlists only the top 1% of products for you
An AI shopping agent that shortlists only the top 1% of products for you
Turn any video into a clean summary, transcript, or mind map — free, no sign-up
Turn any video into a clean summary, transcript, or mind map — free, no sign-up
An AI research workspace that summarizes, compares and cites your documents
An AI research workspace that summarizes, compares and cites your documents
