Comparison

Centra Online Library vs Lectra Notes

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

Head to head
About

Centra Online Library

Access a wide range of information and resources on the go. This app offers configurable features for information providers, including search, account management, event registration, and room bookings. It is powered by a customizable web-based CMS for real-time content updates.

Highlights
  • Information access from anywhere
  • Integrated search functionality
  • Account management
  • Event registrations
  • Room bookings
  • Customizable web-based CMS
Features
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Access the information and resources you need from anywhere, anytime. Configurable features for information providers include integrated search, my account, event registrations, room bookings, form submissions and more all backed by a highly customizable web-based CMS for near real time content updates and submissions management.

About

Lectra Notes

This app provides a private workspace for reading, annotating, and organizing PDF documents. It helps users understand dense texts faster with on-device intelligence for summaries and suggested tags. Designed for a calmer document workflow, it ensures your files remain private.

Highlights
  • Read and mark up PDFs
  • Highlight key passages and add notes
  • Organize documents with folders and tags
  • Generate summaries and suggested tags
  • Private by design with on-device intelligence
  • Backup and sync library
Features
Read full description

Lectra is a workspace for the documents you think on: lecture slides, problem sets, papers, and textbooks, marked up by hand and kept in one library that works without a signal. READ AND MARK UP Open any PDF and work it over with Apple Pencil. A pressure-responsive pen, highlighter, and eraser in a calm, distraction-free editor keep your ink sharp at any zoom. Select the document's own text with a finger. On Apple Pencil Pro, squeeze to switch tools. MADE FOR IPHONE DUO Folded, Lectra fits the outer screen. Open it, and your page spreads across the full display, with every control kept clear of the camera and status bar. On iPad, keep two documents side by side. RECORD THE LECTURE BESIDE YOUR NOTES Start recording from a control that floats above the whole app, then keep writing. Tap a handwritten stroke to hear what was being said as the pen moved. Drag the playhead and watch the page fill back in, stroke by stroke. Transcription runs on your iPad, and an hour of lecture takes about 15 MB. NOTEBOOKS AND PAPER Start from a blank page when the thinking hasn't found a document yet. Choose blank, lined, grid, dotted, or Cornell paper for each new page, then export your pages as PDFs. SCAN ANYTHING Bring paper into the record. Scan pages with the camera and mark them up like any other PDF. ASK YOUR DOCUMENTS Ask a question about what you're reading and get an answer that cites the page it came from. Summarize a document to get to the point faster. These features run on your iPad, are off until you turn them on, and never use your notes or documents to train a model. WHEN READING TURNS INTO WORK Run Python where you already work: notebooks with charts, a real shell, Git, and a code editor, all on your iPad and all offline. The document and the work on it stay in the same place. YOUR MAC, TOO Lectra for Mac is a free download at canvascope.org/mac. It brings the whole app to your desktop, puts your Mac on your iPad as a remote desktop, sends documents straight between iPad and Mac, and shares one clipboard. The Remote Desktop assistant can open a website, search, or launch an app on your Mac in one step, and asks before it acts unless you turn on Auto-run. A LIBRARY THAT KEEPS UP Everything in one place, available offline, and backed up when you sign in. Your documents are yours: export them anytime, in formats that open anywhere. PRIVATE BY DESIGN No ads and no tracking. Lectra is free to use.

Screenshots

Centra Online Library4 screens
Lectra Notes4 screens

Verdict

The call

The clearest difference is ratings volume: Lectra Notes at 9 against Centra Online Library's 1. Centra Online Library's advantage is iOS requirement (11.0 vs 18.0). On price, rating, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Centra Online Library against 5.0 for Lectra Notes. That said, the two scores are not equally well evidenced: Lectra Notes has 9 ratings behind it against 1, so its average is the more settled of the two.

Scorecard2 real differences · 7 level
Centra Online Library versus Lectra Notes: the parameters behind the verdict, then further details
ParameterCentra Online LibraryLectra Notes
PriceFreeFree
Rating5.0 (1 ratings)5.0 (9 ratings)
Number of ratings19 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better18.0
Further details — not scored
Size18 MB51 MB
Age rating4+4+
DeveloperStacks Inc.Noel Sason

Customer experience

Centra Online Library

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Lectra Notes

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Centra Online Library

No in-app purchases

None

Lectra Notes

No in-app purchases

Questions

Is Centra Online Library free?
Centra Online Library is free to download, with no in-app purchases.
Is Lectra Notes free?
Lectra Notes is free to download, with no in-app purchases.
Which has better reviews, Centra Online Library or Lectra Notes?
Centra Online Library and Lectra Notes are both rated 5.0 out of 5 on the App Store, from 1 and 9 ratings respectively.
Do Centra Online Library or Lectra Notes have ads?
Neither Centra Online Library nor Lectra Notes shows ads.

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