Comparison

Outread vs Celer

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

Head to head
About

Outread

Enhance your reading speed and comprehension with this app. It offers guided reading modes, memory exercises, and supports various document types. Improve focus and retention for all readers.

Highlights
  • Speed reading modes (Guide & Flash)
  • Peripheral vision and memory exercises
  • Webpage and document import
  • Adjustable reading speed and chunk length
  • Progress tracking and reading stats
  • AI translation
  • Offline reading
Features
Read full description

Speed-read websites, ebooks and documents. Outread improves reading effectiveness by helping you to focus on reading small chunks of text at a time. You can either follow the highlighter along the page or keep the text centered. Featured by Apple in “Best New Apps”, “Train Your Brain” and "Read Something New" sections “You're in luck, because Outread will help you get through [articles] and learn speed-reading in the process.” — Lifehacker "Speed Between the Lines" — WSJ “A clear winner in the speed-reading category” — AppAdvice BASIC FEATURES: - Speed read by following the highlighter along the page (Guide Mode) or by keeping the focused phrase in the center of the screen (Flash Mode - Rapid Serial Visual Presentation) - Exercises improving peripheral vision, eidetic memory, short-term memory and chunking ability. - Add webpages from Safari or other apps using share extension - Paste text or add from a URL - Sync your library, preferences and reading stats between your devices - Adjust the reading speed and chunk length (length of text you read at once) - Bookmark parts of text for later and add notes to them - Selection of fonts to suit all reading conditions - Monitor your progress with reading stats - Filter (by services or tags) and sort (by date, length or title) the items - See images included in text (even during speed reading) - AI translate text added to the app to many supported languages - Pleasant reading experience improving comprehension and concentration for people with dyslexia, ADD and ADHD - Test your reading speed and comprehension - Universal app for iPhone, iPad and Mac - Everything is always with you, even offline OUTREAD+ FEATURES: - Read free classic novels from the built-in catalog - Sync with Instapaper - Add your own ebooks (DRM-free ePub) - Add PDF, Microsoft Word, RTF and TXT documents - Higher reading speed up to 1,500 words per minute - Unlimited bookmarks and notes - Reader themes: Black & White (great for OLED), Sepia and Gray NOTE: - DRM-protected ebooks (Kindle and most of iBooks ebooks) are not supported Terms and Conditions: https://outreadapp.com/terms Privacy Policy: https://outreadapp.com/privacy-policy If you have any questions or suggestions, you can reach us at contact@outreadapp.com

About

Celer

Enhance your reading speed, focus, and comprehension with a scientifically-backed method. This app offers an immersive environment and assistive technology to help you absorb information faster and retain it better. It's an essential tool for students, professionals, and individuals with neurodivergent reading needs.

Highlights
  • Read 2-3x faster
  • Sharpen focus with immersive environment
  • Boost memory and retention
  • Assistive tool for ADHD & Dyslexia
  • Import EPUB, PDF, mobi, rtf, txt
  • Read articles and web content
  • Customizable themes
Features
Read full description

Ever finish a page and realize you remember nothing? Read the same sentence three times and still lose your place? Celer was built for exactly that. Celer guides your eyes through the text with subtle highlighting, so your attention has a track to follow. Readers with ADHD and dyslexia tell us it's the difference between fighting a page and finishing it. HOW IT HELPS • Guided highlighting keeps your place — no more re-reading the same line • Adjustable pace: the text moves with you, not against you • Distraction-free reading screen, tuned for focus • Comprehension grows because your attention stays where the words are YOUR LIBRARY, YOUR WAY • Import EPUB, PDF, MOBI, RTF and TXT • Massive free classics library, ready to read • Follow articles and news with built-in RSS • Highlights and notes that stay with your books PRIVATE BY DESIGN No accounts required, no personal data collected. Your reading stays yours. Whether you have ADHD, dyslexia, or just a phone full of distractions, Celer helps you actually finish what you start. Try it free. Celer is an assistive reading tool, not a medical device or treatment. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Outread4 screens
Celer4 screens

Verdict

The call

The clearest difference is rating: Outread at 4.7 against Celer's 4.0. Outread also leads on review sentiment (80% vs 57%) and ratings volume (1.4K vs 21). Celer's advantage is update cadence (every 10 days vs every 3 weeks). On price, ads, in-app purchases and monetization model 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. Outread sells 10 in-app purchases, starting at $2.99 per 7 days and Celer sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Outread holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Outread has 1.4K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 80% of Outread's written reviews are positive against 57% of Celer's.

UpkeepUpdate frequency

Outread ships an update every 3 weeks, Celer every 10 days. The most recent releases landed on October 15, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level
Outread versus Celer: the parameters behind the verdict, then further details
ParameterOutreadCeler
PriceFreeFree
Rating4.7 (1.4K ratings) — better4.0 (21 ratings)
Positive reviews80.2% of reviews — better57.1% of reviews
Number of ratings1.4K — better21
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size38 MB62 MB
Age rating9+4+
DeveloperArkadiusz HolkoMobile Craft MB

Customer experience

Outread

All ratings1,351 ratings
Positive92.8%
Neutral2.9%
Negative4.3%
Written reviews278 reviews
Positive80.2%
Neutral6.1%
Negative13.7%

Celer

All ratings21 ratings
Positive76.2%
Neutral0.0%
Negative23.8%
Written reviews14 reviews
Positive57.1%
Neutral0.0%
Negative42.9%

Bugs and requests

Outread

Reported bugs

3 issues
  • Unable to link to Pocket
  • Login screen freezes
  • Incompatible with older devices

Requested features

11 requests
  • Highlighting, underlining and saving quotes feature
  • Ability to sync books and progress across devices
  • Bionic reading feature
  • Ability to scroll while reading in highlight mode
  • Customizable highlighted text color and background
Show 6 more
  • Larger font size options
  • Ability to link to virtual library apps like Libby
  • Bookmarking and note-taking features
  • More advanced training exercises and levels
  • Ability to scan photos from album
  • Compatibility with Apple Vision Pro

Celer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Outread

Subscriptions8
  • Outread+ Weekly$2.997 Days
  • Outread+ Weekly$3.997 Days
  • Outread+ Monthly$4.991 Month
Show 5 more
  • Outread+ Monthly$7.991 Month
  • Outread+ Monthly Family$8.491 Month
  • Outread+ Annual7 Days trial$29.991 Year
  • Outread+ Annual Family7 Days trial$49.991 Year
  • Outread+ Annual7 Days trial$49.991 Year
One-time2
  • Outread+ Lifetime$119.99
  • Outread+ Lifetime Family$149.99
4 purchases

Celer

Subscriptions4
  • Premium month$7.991 Month
  • Premium quarter$17.993 Months
  • Premium Year7 Days trial$34.991 Year
Show 1 more
  • Premium Year Plan$79.991 Year

Questions

Is Outread free?
Outread is free to download, with in-app purchases available.
Is Celer free?
Celer is free to download, with in-app purchases available.
Which has better reviews, Outread or Celer?
Outread is rated higher. Outread averages 4.7 out of 5 from 1.4K ratings, while Celer averages 4.0 from 21 ratings.
Do Outread or Celer have ads?
Neither Outread nor Celer shows ads.
Which is updated more often, Outread or Celer?
Outread ships an update every 3 weeks, and Celer every 10 days. Most recently, Outread was updated on October 15, 2026 and Celer on September 21, 2026.

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