Comparison

Libro.fm Audiobooks vs CogniLens

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

Head to head
About

Libro.fm Audiobooks

Listen to audiobooks while supporting independent bookstores. Access a vast library, enjoy DRM-free content, and utilize reader-friendly features like bookmarks and sleep timers. Purchases directly benefit your chosen local bookshop.

Highlights
  • Support for independent bookstores
  • DRM-free audiobooks
  • Bookmarks and sleep timer
  • Adjustable playback speed
  • Automatic syncing across devices
  • Recommendations from booksellers
Features
Currently charting
Read full description

Looking to read audiobooks, and love supporting your local bookshop? We’re Libro.fm, an employee-owned audiobook company that shares profits with more than 4,000 indie bookshops around the globe. Whether you’re starting a membership or grabbing one of our 600,000+ audiobooks à la carte, every purchase supports your chosen store. • DRM-free (accessible audiobooks) • Reader-friendly features: Create bookmarks, set a sleep timer, adjust playback speed, create and assign tags, and automatically sync your spot across devices • Use your Libro.fm credits to redeem audiobooks in app • Supports Apple Watch and CarPlay • Recommendations from real booksellers As a Social Purpose Corporation and Certified B Corp™, we're proud to put time and resources into supporting indie bookshops and getting more folks to read—even if those goals may at times conflict with our financial interests. We care about the reading ecosystem and want it to thrive. Our privacy policy can be found at https://libro.fm/privacy Our terms of use can be found at https://libro.fm/terms

About

CogniLens

This app transforms text to make it more readable for individuals with dyslexia and ADHD. Customize spacing, size, and layout, or use text-to-speech. It supports document uploads, text pasting, and photo scanning.

Highlights
  • Text transformation for readability
  • Customizable layout and spacing
  • Text-to-speech functionality
  • Document upload and text pasting
  • Photo scanning for text conversion
  • Light/dark mode and focus controls
Features
Read full description

CogniLens makes text easier to read. Built for dyslexia, ADHD, and neurodivergent readers, CogniLens lets you transform text exactly the way you like—so it’s simpler to follow, easier on your eyes, and finally feels readable. What you can do: • Upload your documents or paste text and instantly convert it into your preferred reading format • Customize the look and layout until it feels right (spacing, size, alignment, and more) • Take a photo of any page or printed text and turn it into readable text that you can transform • Tap to listen with text-to-speech instead of reading • Use light/dark mode and focus-friendly controls • Pick up where you left off with reading history and saved position Language: English (more languages coming later) CogniLens works across iOS and the web—with a Chrome extension—so your reading settings and progress can follow you anywhere. Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CogniLens Terms of Use: https://www.cognitionlabs.com/terms-of-use

Screenshots

Libro.fm Audiobooks4 screens
CogniLens4 screens

Verdict

The call

The clearest difference is in-app purchases: Libro.fm Audiobooks at none against CogniLens's 2. Libro.fm Audiobooks also leads on ratings volume (41K vs 1) and chart position (#95 vs unranked). On price, rating, 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. CogniLens sells 2 in-app purchases, starting at $5.00 per month. Libro.fm Audiobooks asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Libro.fm Audiobooks against 5.0 for CogniLens. That said, the two scores are not equally well evidenced: Libro.fm Audiobooks has 41K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 7 level
Libro.fm Audiobooks versus CogniLens: the parameters behind the verdict, then further details
ParameterLibro.fm AudiobooksCogniLens
PriceFreeFree
Rating4.9 (41K ratings)5.0 (1 ratings) — better
Positive reviews91.8% of reviews—
Number of ratings41K — better1
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
Best chart rank#95 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.2 — better16.4
Further details — not scored
Size74 MB90 MB
Age rating12+4+
DeveloperLibro.fmCognition Labs

Customer experience

Libro.fm Audiobooks

All ratings41,215 ratings
Positive97.9%
Neutral1.0%
Negative1.2%
Written reviews809 reviews
Positive91.8%
Neutral3.2%
Negative4.9%

CogniLens

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

Bugs and requests

Libro.fm Audiobooks

Reported bugs

3 issues
  • Playback stops when device goes to sleep
  • Inability to download audiobooks on cellular data
  • App crashes and loses progress in books

Requested features

4 requests
  • Add chapter support for audiobooks
  • Improve search and browsing capabilities
  • Allow in-app purchases and account management
  • Implement syncing across devices

CogniLens

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Libro.fm Audiobooks

No in-app purchases

2 purchases

CogniLens

Subscriptions2
  • CogniLens Monthly$5.001 Month
  • CogniLens Yearly$54.001 Year

Questions

Is Libro.fm Audiobooks free?
Libro.fm Audiobooks is free to download, with no in-app purchases.
Is CogniLens free?
CogniLens is free to download, with in-app purchases available.
Which has better reviews, Libro.fm Audiobooks or CogniLens?
CogniLens is rated higher. Libro.fm Audiobooks averages 4.9 out of 5 from 41K ratings, while CogniLens averages 5.0 from 1 ratings.
Do Libro.fm Audiobooks or CogniLens have ads?
Neither Libro.fm Audiobooks nor CogniLens shows ads.
Which is updated more often, Libro.fm Audiobooks or CogniLens?
Libro.fm Audiobooks ships an update every 3 weeks, and CogniLens every 3 weeks. Most recently, Libro.fm Audiobooks was updated on November 7, 2026 and CogniLens on October 31, 2026.

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