Comparison

Celer vs Speed Reader

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

Head to head
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/

About

Speed Reader

Boost your reading speed and comprehension with scientifically proven techniques. This app offers multiple reading modes, supports various document formats including PDFs and ebooks, and uses AI for instant summaries. Customize your experience for optimal visual comfort and track your progress.

Highlights
  • Multiple speed reading modes (Focus, RSVP, Anchor, Highlight, Chunking)
  • Universal document support (PDF, EPUB, DOCX, PPTX, Web Articles)
  • Built-in OCR for image and scan conversion
  • AI-powered instant summaries
  • Customizable visual comfort (Dark Mode, OpenDyslexic font)
  • Adjustable WPM settings
  • Progress tracking and achievements
Features
Read full description

Read faster, comprehend more, and save hours every week with ZipWeasel. We combine scientifically proven speed reading technology with custom accessibility tools to help you boost your WPM (Words Per Minute) without sacrificing comprehension. FIVE POWERFUL READING MODES Find the perfect setting for your brain: Focus Mode (Advanced RSVP) The ultimate speed tool. This mode centers every word on a specific "recognition point" (usually the middle letter). By keeping your eye completely still, you eliminate saccadic eye movements and can triple your reading speed instantly. RSVP Mode (Rapid Serial Visual Presentation) A simpler alternative to Focus Mode. This flashes words one by one in the center of the screen without the specific letter alignment. Perfect for users who find the advanced centering too intense but still want high speed. Anchor Mode (Deep Focus) A game-changer for ADHD and Dyslexia. We smartly bold the beginning of every word to guide your eye through the text block. This artificial fixation point prevents lines from blurring together and keeps you in the flow. Highlight Mode (Visual Pacer) Like a digital finger guiding you across the page. This mode highlights text one word at a time as you read, keeping you on track and preventing regression (re-reading lines) without removing the surrounding context. Chunking Mode (Context Reader) Highlights groups of words (2-4 words) at a time. This offers the best balance between speed and context, allowing you to absorb complex phrases naturally. UNIVERSAL DOCUMENT SUPPORT Don't get stuck with an app that only opens plain text. ZipWeasel handles your real-world workflow with zero friction: PDFs & Office Docs: Full support for professional formats including PDF, DOCX, and PPTX. eBooks: Native EPUB reader support for your digital library. Web Articles: Paste any URL to instantly convert cluttered websites into clean, speed-readable text. Images & Scans: Built-in OCR converts photos of textbooks or physical papers into digital text instantly. AI-POWERED INTELLIGENCE Instant Summaries: Short on time? Let our AI extract key points and generate concise summaries of long documents in seconds. CUSTOMIZE YOUR EXPERIENCE Visual Comfort: Full Dark Mode, OpenDyslexic font support, and adjustable text sizing to reduce eye strain. Speed Control: Fully adjustable WPM settings to match your reading level. Smart Navigation: Search within docs, bookmark key sections, and resume exactly where you left off. Track Your Growth: Visualize your progress with interactive charts and earn achievements as you improve. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Celer4 screens
Speed Reader4 screens

Verdict

The call

The clearest difference is review sentiment: Celer at 57% against Speed Reader's 0%. Speed Reader's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, ads and in-app purchases 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. Celer sells 4 in-app purchases, starting at $7.99 per month and Speed Reader sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Celer ships an update every 10 days, Speed Reader weekly. The most recent releases landed on September 21, 2026 and September 7, 2026 respectively.

Scorecard2 real differences · 8 level
Celer versus Speed Reader: the parameters behind the verdict, then further details
ParameterCelerSpeed Reader
PriceFreeFree
Rating4.0 (21 ratings) — better
Positive reviews57.1% of reviews — better0.0% of reviews
Number of ratings21 — better
Update frequencyEvery 10 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size62 MB100 MB
Age rating4+4+
DeveloperMobile Craft MB4vor4 UG

Customer experience

Celer

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

Speed Reader

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

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
4 purchases

Speed Reader

Subscriptions3
  • Weekly ZipWeasel Pro Subscription$2.997 Days
  • Monthly ZipWeasel Subscription$5.991 Month
  • Annual ZipWeasel Pro Subscription$29.991 Year
One-time1
  • Lifetime ZipWeasel Pro Subscription$59.99

Questions

Is Celer free?
Celer is free to download, with in-app purchases available.
Is Speed Reader free?
Speed Reader is free to download, with in-app purchases available.
Do Celer or Speed Reader have ads?
Neither Celer nor Speed Reader shows ads.
Which is updated more often, Celer or Speed Reader?
Celer ships an update every 10 days, and Speed Reader weekly. Most recently, Celer was updated on September 21, 2026 and Speed Reader on September 7, 2026.

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