Comparison

Paperpile vs Stardust Recorder

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

Stardust Recorder

Features
Read full description

Stardust Recorder is a private voice transcription app that runs entirely on your iPhone. Your recordings, transcripts, and summaries never leave your device. No accounts. No servers. Just you and your voice. WHY STARDUST We built Stardust because voice transcription apps shouldn't require sending your audio to someone else's servers. Your conversations, your interviews, your private thoughts — these belong to you. Stardust uses on-device machine learning to transcribe in 99+ languages, generate summaries with Apple Intelligence, and extract action items from any recording. Everything happens on your phone's processor. Nothing is uploaded. KEY FEATURES · Whisper transcription running locally on your iPhone — no cloud · Apple Intelligence summaries generated on the Neural Engine · 99+ languages with auto-detect (Stardust Pro adds explicit language picker for 22 languages) · On-device encryption (ChaCha20-Poly1305) for every recording · Encryption keys stored in iOS Keychain — never in iCloud · Tag and search across your library · Export to text, Markdown, PDF, DOCX, JSON, or directly to Apple Notes · Real-time waveform visualization during recording · Scrub and replay with audio controls · Action items can be sent to Apple Reminders or Calendar PRIVACY BY DESIGN · No accounts, no sign-up, no email required · No analytics or tracking SDKs · No advertising · Your audio never leaves your device · Your transcripts never leave your device · Your summaries never leave your device · No servers receive your content — we don't have any FREE TIER · 15 recordings per 30-day period (recordings under 30 seconds don't count) · 30-minute maximum per recording · Whisper Base model with 99+ language auto-detect · Plain text export STARDUST PRO Unlock everything: · Unlimited recordings · No length limits · Whisper Tiny, Small, and Medium models · Explicit language picker (22 languages) · Audio file import · All export formats (Markdown, PDF, DOCX, JSON, Notes) · 5 additional themes · Cross-recording search · iCloud sync · Apple Watch quick-record Two purchase options: · Lifetime — one payment, forever · Monthly — auto-renewing subscription WHAT YOU NEED · iPhone running iOS 17 or later · Apple Intelligence requires an Apple Intelligence-capable device (iPhone 15 Pro, 16/16 Pro, or later) running a supported iOS version BUILT BY Stardust Recorder is built by Astir Technology, an indie studio in Sydney, Australia. We're committed to privacy, simplicity, and beautiful design. Questions, feedback, or feature requests? Email contact@astir.technology — we read every message. Welcome to Stardust. Privacy Policy: https://stardust-legal.vercel.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Paperpile3 screens
Stardust Recorder4 screens

Verdict

The call

The clearest difference is in-app purchases: Paperpile at none against Stardust Recorder's 2. Paperpile also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and ads 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. Stardust Recorder sells 2 in-app purchases, starting at $1.99 per month. Paperpile asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Paperpile versus Stardust Recorder: the parameters behind the verdict, then further details
ParameterPaperpileStardust Recorder
PriceFreeFree
Rating4.5 (131 ratings) — better—
Positive reviews71.6% of reviews—
Number of ratings131 — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size242 MB147 MB
Age rating4+4+
DeveloperPaperpile LLCAbrar Miah

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

Stardust Recorder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Paperpile

No in-app purchases

2 purchases

Stardust Recorder

Subscriptions1
  • Stardust Pro$1.991 Month
One-time1
  • Stardust Pro$12.99

Questions

Is Paperpile free?
Paperpile is free to download, with no in-app purchases.
Is Stardust Recorder free?
Stardust Recorder is free to download, with in-app purchases available.
Do Paperpile or Stardust Recorder have ads?
Neither Paperpile nor Stardust Recorder shows ads.

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