Comparison

CogniLens vs Flumen

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

Head to head
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

About

Flumen

Features
Read full description

Read your EPUB books on iPhone, iPad, and Mac with Flumen. Import your own files, browse classics, and keep your books together in one library. Organize your books Create collections, sort by title, author, or progress, and filter books by what you've started or finished. Bookmark the book you're reading to keep it at the top of Library and ready to open from Home. Return to your reading Home shows your current book, saved chapter, and reading progress, with a Continue Reading button to take you back. See how many minutes you've read today and return to other books you've started. Set up the page to suit you Choose a reading theme, font, and text size. Use Paper or Sepia for a warmer page, or switch to a dark theme. Flumen remembers your reading preferences for each book. Find something to read Browse genres and authors, search Project Gutenberg and Standard Ebooks, and download public-domain books straight to your library. Open a book's details to learn more before adding it. Flumen Pro The free version holds up to 15 books and includes EPUB import, Discovery, collections, reader customization, and today's reading time. Flumen Pro is a one-time purchase that adds: • Unlimited books in your library. • Reading goals, streaks, weekly charts, and monthly summaries, including a comparison with the same point last month. • iCloud sync for your books, reading progress, collections, bookmarked book, and reader settings across your Apple devices. To sync, sign in to the same Apple Account with iCloud enabled on each device. Privacy Your library and reading history are stored on your device, with optional iCloud sync through Flumen Pro. Flumen has no ads or third-party analytics tracking.

Screenshots

CogniLens4 screens
Flumen4 screens

Verdict

The call

The clearest difference is update cadence: Flumen at every 9 days against CogniLens's every 3 weeks. On price, ads, in-app purchases and device support 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 and Flumen sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CogniLens ships an update every 3 weeks, Flumen every 9 days. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

Scorecard1 real difference · 8 level
CogniLens versus Flumen: the parameters behind the verdict, then further details
ParameterCogniLensFlumen
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size90 MB16 MB
Age rating4+12+
DeveloperCognition LabsMathias Jaeger-Pedersen

In-app purchases

2 purchases

CogniLens

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

Flumen

One-time1
  • Flumen Pro$6.99

Questions

Is CogniLens free?
CogniLens is free to download, with in-app purchases available.
Is Flumen free?
Flumen is free to download, with in-app purchases available.
Do CogniLens or Flumen have ads?
Neither CogniLens nor Flumen shows ads.
Which is updated more often, CogniLens or Flumen?
CogniLens ships an update every 3 weeks, and Flumen every 9 days. Most recently, CogniLens was updated on October 7, 2026 and Flumen on October 22, 2026.

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