Comparison

RSVP Speed Reader vs Dzen Reader

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

Head to head
About

RSVP Speed Reader

Features
Read full description

Unlock your true reading potential with RSVP Speed Reader! Using Rapid Serial Visual Presentation (RSVP) technology, our app eliminates the need for your eyes to move across the page. Words flash sequentially at your chosen speed, allowing you to read up to 3x faster without losing comprehension. KEY FEATURES: โ€ข AI Chapter Detection: Upload large PDFs or text files, and our advanced AI will automatically map out chapters and structure your book. โ€ข Read Anything: Import PDFs, DOCX, TXT files, or paste direct URLs and text. โ€ข Complete Control: Adjust your reading speed seamlessly from 100 to 1,000+ WPM. โ€ข Eye Comfort: Choose from multiple themes including OLED Dark, Forest, and Sepia. โ€ข Accessibility: Features Dyslexic-friendly fonts and customizable Optimal Recognition Point (ORP) highlight colors. โ€ข Track Progress: Detailed reading statistics, daily goals, and reading time estimates. Whether you're a student trying to get through textbooks, a professional reading long reports, or just an avid reader who wants to consume more books, RSVP Speed Reader is your ultimate reading companion. Join thousands of readers and upgrade your reading speed today! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Dzen Reader

Features
Read full description

Do you have a stack of unread non-fiction, business, and self-improvement books waiting on your shelf? Do you want to absorb knowledge and finish entire books in hours instead of weeks? Dzen Reader is your personal cognitive accelerator. Powered by the scientifically proven RSVP (Rapid Serial Visual Presentation) method, Dzen Reader displays words sequentially in the center of your screen with bionic Optimal Recognition Point (ORP) highlighting. By eliminating the need for your eyes to track across lines and reducing inner subvocalization, Dzen Reader frees up cognitive bandwidth. The result? Pure, laser-sharp focus and 2x to 3x faster reading speed with excellent comprehension. Finish an average 300-page book in just 3 to 4 hours instead of 8 to 10 hours! WHY HIGH-PERFORMERS CHOOSE DZEN READER: - Read 2-3x Faster with RSVP Instantly accelerate from a typical 200 WPM to 500-800+ WPM. Expand your knowledge at the speed of modern life. - Built-In Bestseller Book Summaries Read distilled insights from transformative books in 3โ€“5 minutes: "Atomic Habits", "Thinking, Fast and Slow", "Deep Work", "The Psychology of Money", "Essentialism", "Stoic Wisdom", "The Black Swan", and more. - 60-Second Speed Test & Comprehension Check Test your baseline reading speed in one minute, take an interactive comprehension quiz, and share your speed achievement card to Instagram Stories or Telegram. - Bionic ORP Focus Point The Optimal Recognition Point of each word is highlighted with accent color or bold weighting, allowing your brain to process vocabulary instantaneously without eye strain. - Dynamic Focus Rhythms Match your reading cadence to your energy: choose "Calm Breathing (ยฑ5%)" for deep immersion or "Intense Pulse (ยฑ15%)" for rapid knowledge sprints. - Import Your Own Library Effortlessly load your favorite books, work documents, and articles in EPUB, PDF, FB2, and TXT formats. Fast chapter parsing and position sync keep your place automatically. - Eye Care & Smart Break Reminders Prevent fatigue with customizable focus intervals (every 15 minutes, 1 hour, or at chapter completion). Rest your eyes, retain more, and read longer. - Zen Aesthetic & Deep Customization Enjoy a distraction-free experience with Dark OLED, Warm Sepia, and Pure Light themes, custom speeds, and effortless swipe navigation. Stop flipping pages and wasting time. Download knowledge directly into your mind! Download Dzen Reader today and unlock your reading superpower!

Screenshots

RSVP Speed Reader4 screens
Dzen Reader4 screens

Verdict

The call

The clearest difference is ads: Dzen Reader at none against RSVP Speed Reader's shown. RSVP Speed Reader's advantage is update cadence (every 6 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. RSVP Speed Reader sells 2 in-app purchases, starting at $3.99 per month and Dzen Reader sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

RSVP Speed Reader ships an update every 6 days, Dzen Reader every 2 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard2 real differences ยท 4 level
RSVP Speed Reader versus Dzen Reader: the parameters behind the verdict, then further details
ParameterRSVP Speed ReaderDzen Reader
PriceFreeFree
Update frequencyEvery 6 days โ€” betterEvery 2 months
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better16.0
Further details โ€” not scored
Size24 MB12 MB
Age rating4+4+
DeveloperMahir Cem ALCIOleksandr Zheliezniak

In-app purchases

2 purchases

RSVP Speed Reader

Subscriptions2
  • RSVP Pro Plan3 Days trial$3.991 Month
  • RSVP Pro Plan3 Days trial$29.991 Year
2 purchases

Dzen Reader

Subscriptions2
  • Dzen monthly subscription$4.991 Month
  • Dzen yearly subscription3 Days trial$29.991 Year

Questions

Is RSVP Speed Reader free?
RSVP Speed Reader is free to download, with in-app purchases available.
Is Dzen Reader free?
Dzen Reader is free to download, with in-app purchases available.
Do RSVP Speed Reader or Dzen Reader have ads?
RSVP Speed Reader shows ads; Dzen Reader does not.
Which is updated more often, RSVP Speed Reader or Dzen Reader?
RSVP Speed Reader ships an update every 6 days, and Dzen Reader every 2 months. Most recently, RSVP Speed Reader was updated on October 24, 2026 and Dzen Reader on October 29, 2026.

Other comparisons