# Centra Online Library vs Lectra Notes

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.

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

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.

## The numbers

| Metric | Centra Online Library | Lectra Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/centra-online-library/id1539035759/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/lectra-notes-pdf-annotator/id6759754531/reviews) |
| Number of ratings | 1 | **9** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Free | Free |
| Size | 18 MB | 51 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stacks Inc.](https://appshunter.io/developer/1275752393) | [Noel Sason](https://appshunter.io/developer/1880486957) |

## What reviewers say

### Centra Online Library

[App page](https://appshunter.io/ios/app/centra-online-library/id1539035759)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Lectra Notes

[App page](https://appshunter.io/ios/app/lectra-notes-pdf-annotator/id6759754531)

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:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*