Comparison

Paperpile vs Paigy AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Paperpile

Organize and manage your research papers effortlessly. Collect, read, and annotate PDFs from millions of academic journals. Beat paper chaos with a tidy digital library.

Highlights
  • Search millions of academic papers
  • Collect PDFs with one tap
  • Organize with folders and labels
  • Read and annotate PDFs
  • Highlight and add notes
  • Browser integration for saving
Features
Read full description

Get a head start for you research and finally beat the paper chaos on your desk. With Paperpile you have all your research PDFs in one place — nice and tidy. Paperpile makes it easier than ever to collect, manage, read, and annotate your papers. FIND & COLLECT - Search millions of papers from 20,000+ academic journals right in the app. - Add new papers to your collection with one tap and the PDF will be downloaded automatically. - Save directly from your browser to your Paperpile library - User your university's off-campus proxy access to get restricted content behind paywalls. MANAGE & ORGANIZE - Bring structure to your library with folders and subfolders - Organize your library visually with colored labels - Mark important papers with stars. - Search your library to find the paper you need fast. READ & ANNOTATE - Read like on paper with a fast and slick PDF viewer experience - Highlight important sections in different colors - Add notes and never forget an important idea. - Add hand-drawn annotations - with your fingers or your Apple Pencil The Paperpile App requires a Paperpile account.

About

Paigy AI

Features
Read full description

You don't have to sit at your computer to keep your agents working. Hand off the work and walk away — take a walk, hit the gym, climb a mountain, be somewhere else entirely. Your agents keep going without you. When one actually needs a decision, or finishes what you asked, it reaches you the one way that doesn't pull you back to a screen: your phone rings. Answer by voice and keep moving, or dismiss it and it backs off on its own. Nothing waits on you that doesn't have to — and nothing interrupts you that isn't worth it. WHY PAIGY • Off the desk, not off the work. Your agents run while you're away; you're pulled in only at the moments that need a human. • Calls, not nags. Requests arrive as native incoming calls — easy to take, easy to dismiss. A dismissed call retries on a gentle schedule (10 min, then 30 min, then 2 hours, then it stops). • Hands-free, by voice. Paigy reads the request aloud; reply out loud and get back to whatever you were doing. See an image or design when a choice is visual. • Private by design. Paigy never listens in the background — audio is processed only during a call you choose to answer. A constraint, not a feature. HOW IT WORKS 1. Add the Paigy integration to your agent and pair it — a quick approve step. 2. Ask your agents to call you (or Paige you) when they are done. 3. Go live your life. Your agent keeps working; when it needs you or finishes, it calls. 4. Answer to decide by voice, or dismiss to handle it later. YOU STAY IN CONTROL • Connect or disconnect any agent at any time. • Choose when messages can ring you, banner you, or stay quiet in your inbox. • Erase any single notification from your history, or delete your entire account and all its data, whenever you want. Sign in with email, phone, Apple, Google, or GitHub. Questions or feedback: support@paigy.ai

Screenshots

Paperpile3 screens
Paigy AI4 screens

Verdict

The call

The clearest difference is update cadence: Paigy AI at fortnightly against Paperpile's every 2 months. Paperpile's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Paperpile ships an update every 2 months, Paigy AI fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Paperpile versus Paigy AI: the parameters behind the verdict, then further details
ParameterPaperpilePaigy AI
PriceFreeFree
Rating4.5 (131 ratings) — better—
Positive reviews71.6% of reviews—
Number of ratings131 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.4
Further details — not scored
Size242 MB81 MB
Age rating4+4+
DeveloperPaperpile LLCMAURICIO URDANETAURIBE

Bugs and requests

Paperpile

Reported bugs

12 issues
  • App crashes frequently on iPad and iOS devices
  • Highlighting disappears when revisiting papers
  • Overlapping annotations delete together when removing one
  • Sync failures requiring logout/login cycles
  • Annotations not syncing between iPad and web versions
Show 7 more
  • PDF metadata recognition failures when adding papers
  • Settings reset when returning to previously edited files
  • App incompatible with older iOS versions (iOS 12)
  • Login authentication errors with university accounts
  • App crashes without reliable internet connection
  • Search functionality broken after updates
  • Annotations not saving/loading on iOS 14.4.2

Requested features

17 requests
  • Dark mode implementation
  • Edit citation metadata on mobile app
  • Change PDF file functionality
  • Save to downloads feature
  • Dictionary/lookup function for reading
Show 12 more
  • Cite while you write feature
  • BibTeX export capability
  • Ability to upload PDFs directly from mobile app
  • Support for Safari and other browsers
  • Desktop application version
  • Shared library access in mobile app
  • Advanced sorting options (by title, author, date)
  • Custom color options for annotations
  • Paste images into PDFs
  • Shape snapping for drawing tools
  • University email authentication
  • Paper rating system beyond stars

Paigy AI

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Paperpile

No in-app purchases

None

Paigy AI

No in-app purchases

Questions

Is Paperpile free?
Paperpile is free to download, with no in-app purchases.
Is Paigy AI free?
Paigy AI is free to download, with no in-app purchases.
Do Paperpile or Paigy AI have ads?
Neither Paperpile nor Paigy AI shows ads.
Which is updated more often, Paperpile or Paigy AI?
Paperpile ships an update every 2 months, and Paigy AI fortnightly. Most recently, Paperpile was updated on November 2, 2026 and Paigy AI on October 31, 2026.

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