Paperguide vs R Discovery

Paperguide

• Teams running systematic reviews that need documented screening decisions
• Researchers who want search, references and writing in one workspace
• Students and academics, who get 30% off with a university email
• Pulling the same data points out of many papers into one table

R Discovery

• Researchers who want a daily feed of new papers in their field
• Reading on a phone: the iOS and Android apps include audio versions of papers
• Readers who want papers translated into their own language
• Paperpal users who want search and writing tools on one subscription

Paperguide

• The Free plan has no systematic reviews or shared workspaces and is limited to 20 AI searches and 2,000 AI credits a month.
• AI features draw on a monthly credit pool: 12,500 on Plus, 50,000 on Pro and 150,000 on Evidence.
• Dual-reviewer screening for systematic reviews needs the Evidence plan, at $89 per seat / month billed annually.
• Image and table extraction is marked as coming soon on the pricing page.

R Discovery

• Free accounts get 3 AI Assistant uses and 3 Chat PDF uses a day, with 5 file uploads a month.
• Literature maps, content feeds, multiple projects and Zotero or Mendeley sync are listed for paid plans only.
• The site bills in local currencies, so prices vary by country. The US prices here are from the pricing page's own price data and agree with the US App Store listing.
• Refunds are limited to 30 days after purchase on annual plans and 7 days on monthly plans.

Paperguide

AI Search

Ask a research question in plain language and get a synthesized answer drawn from more than 200 million papers, with each claim linked to its source.

Systematic reviews

Screens papers against a predefined protocol with cited evidence for each criterion, then produces verified extraction tables, a report and a PRISMA diagram. Dual-reviewer screening is on the Evidence plan.

Reference manager

Imports from Zotero or Mendeley, or by DOI, URL, PDF, BibTeX or RIS, fetches metadata and open-access PDFs, and formats citations in more than 1,000 styles.

Extract Data

You define the columns and the AI fills them across the selected papers, with every value linked to the statement it came from. Tables export to CSV or Excel.

Research Agent

Investigates a topic across the paper database and your library, answers questions about one or several PDFs, and can generate a literature review of up to 50 papers.

AI Writer

Drafts and edits documents with citations from your library and the paper database, and exports them as Word, PDF or LaTeX files.

R Discovery

Ask R Discovery

An AI assistant that answers research questions with references drawn from more than 300 million papers. Free accounts get 3 uses a day.

Chat PDF

Upload a paper, or pick one already on R Discovery, and ask questions about it. The free plan allows 3 uses a day and 5 file uploads a month.

Literature Review

Finds relevant papers and synthesizes findings, gaps and themes across them. The feature page says it is available only on a desktop or laptop.

Personalized feed and alerts

A feed of papers matched to chosen interests, with alerts for new publications in a field. Personalized recommendations and curated content feeds are part of Prime.

Audio papers and translation

Listen to papers read aloud and read them in more than 30 languages. Use is limited on the free plan and unlimited on Prime.

Library and reference manager sync

Save papers to reading lists. Prime syncs those lists to Zotero or Mendeley automatically and lets collaborators share them.

Paperguide

• Free$0

  2,000 AI credits and 20 AI searches a month, 500 MB of reference storage, and extraction tables of up to 10 papers and 5 columns.

• Plus$12

  per seat / month, billed annually ($144); $19 billed monthly

  12,500 AI credits a month, systematic reviews of up to 1,000 papers, unlimited AI searches and reference storage, and shared workspaces.

• Pro$29

  per seat / month, billed annually ($348); $49 billed monthly

  50,000 AI credits a month, systematic reviews of up to 5,000 papers and 500 Search API requests a month.

• Evidence$89

  per seat / month, billed annually ($1,068); $149 billed monthly

  150,000 AI credits a month, PRISMA-grade dual-reviewer screening, a dedicated support channel and 1,500 Search API requests a month.

• EnterpriseCustom

  Custom AI credits, systematic reviews of up to 20,000 papers, dual-reviewer screening and a dedicated support channel.

R Discovery

• Free$0

  Standard recommendations, 3 AI Assistant uses a day, and 3 Chat PDF uses a day with 5 file uploads a month. No credit card required.

• Prime$69

  per year (shown as $6 a month, billed yearly); $12 billed monthly

  Unlimited AI Assistant, Chat PDF and Literature Review, literature maps and Zotero or Mendeley sync. Crossed-out prices: $119 a year and $19 a month.

• Paperpal Prime$144

  per year (shown as $12 a month, billed yearly); $25 billed monthly

  Everything in Prime plus Paperpal writing tools, plagiarism and reference checks, Mind the Graph illustrations and research skill courses.

Paperguide

• Annual discount

  Save up to 41% with yearly billing

  Billed yearly, Plus is $12 a seat per month against $19 billed monthly, Pro is $29 against $49 and Evidence is $89 against $149. The pricing page labels the saving as 41%.

• Education

  30% academic discount with a university email

  Verifying a university email takes 30% off: Plus becomes $8, Pro $20 and Evidence $62 per seat / month billed yearly, or $13, $34 and $104 billed monthly.

R Discovery

• Annual discount

  Yearly billing costs about half of monthly

  In the US price data, Prime is $69 a year against $12 a month, and Paperpal Prime is $144 a year against $25 a month. Both work out to about 52% less over a year.