Comparison

Strobe vs Read Fast

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

Head to head
About

Strobe

This app helps you read faster by displaying words one at a time in a fixed position. It supports various document formats and offers an optional natural voice narration. Customize your reading experience with adjustable speeds and timing features.

Highlights
  • Rapid Serial Visual Presentation (RSVP)
  • Adjustable reading speed (100-1000 WPM)
  • Natural voice read-aloud narration
  • Support for PDF, EPUB, TXT, and Markdown
  • iCloud Sync across devices
  • Customizable timing and display options
Features
Read full description

Speed read your own books and documents, one word at a time, or listen as a natural voice reads along. No ads, no subscription, no account. Strobe is a speed reading app for iPhone, iPad, and Mac. It uses Rapid Serial Visual Presentation (RSVP): each word appears in the same spot on screen, so your eyes stay still instead of scanning across lines. Import a PDF, EPUB, plain-text, or Markdown file, share an article from Safari, or paste text, then read at 100 to 1,000 words per minute. HOLD TO READ • Press and hold to read. Let go to pause. • Slide up or down while you read to change speed without losing your place. • Swipe sideways while paused to step word by word. • Touch with two fingers to keep reading after you let go, or switch to tap to play. READ ALOUD • A natural voice reads along as the words show, at up to 450 words per minute. • Choose from 15 English voices, American and British. • The voice downloads once and runs on your device, even offline. • Keep listening with the screen locked, and play or pause from the Lock Screen or headphones (iOS 27 or later, and Mac). TIMING THAT FOLLOWS THE TEXT • The speed you set is your real speed, with every pause and slowdown counted. • Smart Timing keeps longer words on screen a little longer. • Punctuation Pauses slow down at sentence ends, commas, dashes, ellipses, and closing quotes, and you set the length of each. • Complexity Timing speeds up simple words and slows down complex ones, each by as much as you choose. • Acronyms and hyphenated words get extra time automatically. • Blank After Sentences adds an optional moment of empty screen between sentences. A FIXED POINT FOR YOUR EYES • Each word lines up on a highlighted focus letter, its Optimal Recognition Point (ORP), in red or one of six other colors. • Show the previous word, the next word, or both, as faintly as you like. • An open quote or parenthesis stays faintly above the word until it closes. • Pop Words In springs each word in, like video captions. YOUR LIBRARY • Every document gets a cover, and Continue Reading takes you back to your exact word. • EPUB tables of contents and PDF bookmarks become chapters, each with its reading time at your speed. • Open the full text with your place highlighted, search for any word or phrase, and tap a word to resume from there. • Page numbers, running headers, and footers are removed on import. • Chinese, Japanese, and Korean text is split into words, and Arabic keeps its connected letterforms. • iCloud Sync keeps your library, places, and speeds the same on iPhone, iPad, and Mac. • Statistics show your time and words read, average session, and real speed. BEYOND THE APP • Share articles and links from Safari and other apps straight into your library. • A Continue Reading widget for your Home Screen, Lock Screen, and Mac desktop. • Siri and Shortcuts can continue reading, open a document, tell you your progress, or speed read any text. MAKE IT YOURS • Seven fonts, adjustable text size, four text tones, and seven highlight colors. • A true black background for OLED screens and reading in the dark. • Every document remembers its own speed. • Keyboard shortcuts on Mac and iPad: Space to read, arrow keys to step, ⌘N for new text, ⌘O to import. • Works with VoiceOver, Larger Text, and Reduce Motion. PRIVATE BY DESIGN Strobe has no account, ads, analytics, or tracking. Your documents stay on your device, and with iCloud Sync, in your own private iCloud, encrypted. The voice runs on your device, so no text is sent away to be read aloud. FREE AND OPEN SOURCE Strobe is free, with no subscription or in-app purchases. The source code is public on GitHub under the Apache 2.0 license. Strobe can't import DRM-protected EPUBs or password-protected PDFs. Reading aloud is for English text, on every Mac and on iPhone and iPad models with 4 GB of memory or more.

About

Read Fast

This app helps you read faster by displaying words sequentially in the center of the screen, reducing subvocalization and improving focus. It supports various file formats and tracks your reading progress to build a consistent habit.

Highlights
  • Rapid Serial Visual Presentation (RSVP) engine
  • Breaks subvocalization bottleneck
  • Import EPUB, PDF, TXT, and pasted text
  • Track daily streaks and WPM
  • Reduces eye fatigue
  • Local device processing for privacy
Features
Read full description

STOP READING. START ABSORBING. Most people read at about the same speed they speak. The reason is subvocalization: the small inner voice that sounds out every word. Absorb is built to break that bottleneck and change how you move through text. Absorb uses an advanced Rapid Serial Visual Presentation (RSVP) engine. Instead of making your eyes scan back and forth across a page, it shows words one after another in the same spot and highlights each word's Optimal Recognition Point. Your gaze stays centered, your focus stays locked, and text moves straight into visual processing. WHY READERS USE ABSORB STEADY FOCUS: The rapid display leaves less room for wandering attention and helps you enter a steady reading flow. BUILD THE HABIT: Track daily streaks, average WPM, reading time, and progress so speed becomes something you can actually train. BRING YOUR OWN BOOKS: Import EPUB, PDF, TXT, and pasted text from your device. LESS EYE FATIGUE: Stop losing your place. Sit back, watch the center, and let the book come to you. PRIVATE BY DESIGN: Processing happens locally on your device. Your files and reading data do not leave your phone. Absorb offers monthly access and a one-time Lifetime unlock. Full access requires a subscription or Lifetime unlock. Download Absorb, import your first book, and finish it tonight. Terms: https://absorb-app-ncmw.onrender.com/terms.html

Screenshots

Strobe4 screens
Read Fast4 screens

Verdict

The call

The clearest difference is in-app purchases: Strobe at none against Read Fast's 3. Strobe also leads on ratings volume (8 vs 2). Read Fast's advantage is update cadence (every 2 days vs weekly). On price, rating, review sentiment 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. Read Fast sells 3 in-app purchases, starting at $4.99 per month. Strobe 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 Strobe against 5.0 for Read Fast. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Strobe ships an update weekly, Read Fast every 2 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Strobe versus Read Fast: the parameters behind the verdict, then further details
ParameterStrobeRead Fast
PriceFreeFree
Rating4.9 (8 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings8 — better2
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size28 MB164 MB
Age rating4+12+
DeveloperJaafar AbdeenMaksym Horoszczak

Customer experience

Strobe

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Read Fast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Strobe

No in-app purchases

3 purchases

Read Fast

Subscriptions2
  • Absorb$4.991 Month
  • Absorb Pro Annual7 Days trial$19.991 Year
One-time1
  • Absorb Pro Lifetime$69.99

Questions

Is Strobe free?
Strobe is free to download, with no in-app purchases.
Is Read Fast free?
Read Fast is free to download, with in-app purchases available.
Which has better reviews, Strobe or Read Fast?
Read Fast is rated higher. Strobe averages 4.9 out of 5 from 8 ratings, while Read Fast averages 5.0 from 2 ratings.
Do Strobe or Read Fast have ads?
Neither Strobe nor Read Fast shows ads.
Which is updated more often, Strobe or Read Fast?
Strobe ships an update weekly, and Read Fast every 2 days. Most recently, Strobe was updated on November 9, 2026 and Read Fast on October 31, 2026.

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