Comparison

rubra vs Pinster AI

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

Head to head
About

rubra

Save, organize, and share bookmarks with visual previews and notes. Create private or public collections for collaboration and easily find inspiration with tags and search.

Highlights
  • Save bookmarks with visual previews
  • Add notes to saved content
  • Organize with tags
  • Filter and search content
  • Create private or public collections
  • Collaborate on collections
  • Share collections
Features
Read full description

rubra is the app for collecting, organizing, and sharing what inspires you. Save bookmarks with visual previews, add notes, and never lose your favorite articles, stories, or ideas. Organize your content with tags, and easily sort, filter, or search to find exactly what you need. Create private or public collections and invite others to collaborate, keeping everything organized and accessible. Share your collections to inspire friends and the community. With rubra, collecting ideas, staying organized, and keeping inspiration at your fingertips has never been easier.

About

Pinster AI

Features
Read full description

Pinster is your personal knowledge assistant, built for professionals, students, researchers, and lifelong learners who want to stay organized and informed. Save web links, documents, and images in one place. Pinster automatically analyzes the content, creates a clean Markdown version, and uses AI to suggest tags and folders based on your categories. It even generates smart summaries so you can review key ideas faster. Key Features: • Smart AI Suggestions – Automatically organizes your content with folder and tag recommendations • AI-Powered Summaries – Quickly understand web pages, PDFs, and articles • Digest – Get scheduled summaries of your bookmarks by day, week, or month, in both text and audio • Chat with Library – Ask questions and get answers from your saved content • Multi-format Support – Save links, documents, images, and notes • Reader Mode – Clean, distraction-free reading experience • Browser Extension – Save bookmarks directly from Chrome or Firefox • Import from Safari and Chrome – Easily bring your bookmarks from other apps • Daily Notifications – Stay updated with smart reminders and summaries • Secure Sync Across Devices – Access your knowledge library from everywhere Whether you're conducting research, curating content, or just learning every day, Pinster helps you capture, organize, and understand your knowledge effortlessly.

Screenshots

rubra4 screens
Pinster AI4 screens

Verdict

The call

The clearest difference is in-app purchases: rubra at none against Pinster AI's 3. rubra also leads on device support (4 vs 2) and iOS requirement (15.6 vs 18.1). On price, update cadence 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. Pinster AI sells 3 in-app purchases, starting at $4.99 per month. rubra asks for nothing beyond the download.

UpkeepUpdate frequency

rubra ships an update every 5 weeks, Pinster AI every 3 weeks. The most recent releases landed on September 7, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
rubra versus Pinster AI: the parameters behind the verdict, then further details
ParameterrubraPinster AI
PriceFreeFree
Rating5.0 (4 ratings) — better
Positive reviews100.0% of reviews
Number of ratings4 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.6 — better18.1
Further details — not scored
Size43 MB56 MB
Age rating4+4+
Developerrubra agStatweer

In-app purchases

None

rubra

No in-app purchases

3 purchases

Pinster AI

Subscriptions3
  • Pro Monthly7 Days trial$4.991 Month
  • Pro Monthly3 Days trial$6.991 Month
  • Pro Yearly7 Days trial$69.991 Year

Questions

Is rubra free?
rubra is free to download, with no in-app purchases.
Is Pinster AI free?
Pinster AI is free to download, with in-app purchases available.
Do rubra or Pinster AI have ads?
Neither rubra nor Pinster AI shows ads.
Which is updated more often, rubra or Pinster AI?
rubra ships an update every 5 weeks, and Pinster AI every 3 weeks. Most recently, rubra was updated on September 7, 2026 and Pinster AI on September 20, 2026.

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