Logically vs Paperguide

Logically

• Students who want references, notes and drafts in one workspace
• People moving a library over from Zotero, Mendeley or EndNote
• Writers who cite in Microsoft Word from a shared reference library
• Asking questions across a whole folder of uploaded papers

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

Logically

• The free plan allows 5 AI chat messages, 5 AI commands and 5 autosuggestions a day, with 100 MB of storage.
• Free accounts are limited to files of 25 MB or 200 pages, a 2-entry automatic bibliography per document and watermarked PDF export.
• Advanced and reasoning AI models are reserved for the Unlimited plan.
• The site lists a web app, a Chrome extension and a Word add-in; it mentions no mobile or desktop apps.

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.

Logically

Document Writer

An editor for notes and full papers with AI autosuggestions, citations pulled from your library and an automatic bibliography. Paid plans export to PDF, Markdown and DOCX without a watermark.

Reference Manager

Stores PDFs, EPUBs, web pages and DOIs with citation details filled in automatically, organized by folders and tags. It imports RIS, BibTeX and CFF files exported from other managers.

AI research assistant

Answers with inline citations in three modes: from your uploaded files, from a Semantic Scholar database of 200 million papers, or from Google search.

File Annotator

Text and area highlights, sticky notes and comments on files in the library, with an Ask AI option that summarizes or explains what you have marked.

Citations in Microsoft Word

A free Word add-in inserts citations and bibliographies from your library in more than 10,000 styles. It supports Word on the web and Microsoft 365 on Mac and Windows.

Chrome extension

A side panel answers questions about the page you are reading with cited sources, and a toolbar button saves papers and books to the reference manager.

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.

Logically

• Free$0

  All products with standard AI models, 5 chat messages, 5 AI commands and 5 autosuggestions a day, and 100 MB of reference and file storage.

• Unlimited$12

  per user / month, billed yearly; $30 billed monthly

  Unlimited AI chat, commands and autosuggestions, advanced and reasoning AI models, unlimited storage and an admin portal for teams.

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.

Logically

• Annual discount

  Save 60% with yearly billing

  The Unlimited plan is $12 per user a month billed yearly against $30 billed monthly. The pricing page labels the yearly option as saving 60%.

• Education

  Extra 50% off the first year for students

  Students who sign up with a university email and finish the product tours get a 50% coupon for the first year of the Unlimited yearly plan. It expires 72 hours after the tours.

• Other savings

  Tiered discount for multiple seats

  Unlimited plan pricing is tiered, so the per-seat price falls as more seats are bought. The pricing FAQ points institutions and nonprofits to the same seat tiers.

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.