Comparison

Readrrr vs BookMarrow

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

Head to head
About

Readrrr

Enhance reading speed and focus with a distraction-free experience. This app uses RSVP technology to display words sequentially, helping you process text faster and track your comprehension progress.

Highlights
  • RSVP speed-reading technology
  • Customizable reading speeds
  • Distraction-free reading environment
  • PDF import and text extraction
  • Reading progress tracking
  • Cross-device synchronization
Features
Read full description

Readrrr uses Rapid Serial Visual Presentation to show words one at a time in the same spot, and a natural voice can read each word aloud as it appears. Your eyes don't have to jump across lines, so you don't lose your place and read faster. Seeing and hearing every word at the same time also keeps your mind from drifting. Start at your normal pace and speed up as it gets comfortable. A Readrrr subscription or one-time purchase includes everything below: RSVP READER Every word has one letter marked in red for your eyes to rest on, so you never have to look for where the word starts. You can change the speed at any time. NARRATION Pick a voice and it reads along in sync with every word at any speed. The voice runs on your phone, so it works offline. SHORT READS Non-fiction you can finish in 10 to 20 minutes, on topics like history, health, science and economics. Each one is written to be read in Readrrr and sits in a collection with related reads. New ones come out every week, and you can suggest a topic. READ ANYTHING Import PDFs and EPUBs, send an article from Safari with one tap, paste text, or scan pages from a paper book. APP LOCKING Pick the apps that take up your day. Starting at 4 am they stay locked until you've read your daily word goal. Every day you hit it adds to your streak. If you really need one of them, you can unlock for 10 minutes once a day. HIGHLIGHTS Save any passage while you read. Readrrr sorts your highlights into themes and brings old ones back to you in the app and in a Home Screen widget, so you don't forget what you read. STATS Track your reading speed, words read and streak as they grow. SYNC Your library, reading position and stats stay in sync across your devices. SUBSCRIPTION Readrrr requires a subscription or a one-time purchase. Subscriptions renew automatically unless you cancel at least 24 hours before the current period ends. You can manage them in your App Store account settings. Privacy Policy: https://www.ocule.no/readrrr/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

BookMarrow

Features
Read full description

You read the book. Now actually use it. Most reading apps help you highlight and forget. BookMarrow is built for the part that matters: turning what you read into what you do. Take notes chapter by chapter, capture the lines worth remembering, and gather every takeaway into one place you'll actually return to. Made for nonfiction readers who want their books to change something. TAKE NOTES THAT STICK • Add a chapter and start writing instantly • Rich formatting — headings, bold, italic, bullets, and lists • Type, handwrite with Apple Pencil, or scan a page with your camera to pull the text straight into your notes TURN IDEAS INTO ACTION • Add "How to apply it" takeaways to any chapter or book • Everything collects in the Apply tab, grouped by book, so you can work through it and check each one off • Tag takeaways by topic to find them fast KEEP THE LINES WORTH REMEMBERING • Save favorite quotes with the book, author, and page • Browse them all in one beautiful Quotes collection • Search and filter across every book BUILD YOUR LIBRARY IN SECONDS • Search any title or scan a barcode — the cover and details fill in automatically • Organize books across Want to Read, Reading, and Read shelves • Drag to prioritize your reading queue, with your next book up front YOURS, EVERYWHERE • Syncs across iPhone and iPad with iCloud • Export any book's notes as Markdown or PDF Your notes live in your own iCloud. No account, no ads, no tracking. Stop collecting highlights you'll never open again. Start finishing books that change how you work and live.

Screenshots

Readrrr4 screens
BookMarrow4 screens

Verdict

The call

Readrrr and BookMarrow are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Readrrr sells 10 in-app purchases, starting at $2.99 per month and BookMarrow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

ScorecardNo meaningful differences
Readrrr versus BookMarrow: the parameters behind the verdict, then further details
ParameterReadrrrBookMarrow
PriceFreeFree
Rating4.6 (22 ratings) — better—
Positive reviews29.0% of reviews—
Number of ratings22 — better—
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad
Requires iOS1817.0 — better
Further details — not scored
Size138 MB4 MB
Age rating4+4+
DeveloperOcule ASJohnny Cox

In-app purchases

10 purchases

Readrrr

Subscriptions9
  • Readrrr Monthly3 Days trial$2.991 Month
  • Weekly$2.997 Days
  • Weekly$4.997 Days
Show 6 more
  • Monthly$7.991 Month
  • Monthly$9.991 Month
  • Yearly$19.991 Year
  • Readrrr Yearly$24.991 Year
  • Yearly$29.991 Year
  • Yearly$39.991 Year
One-time1
  • Readrrr Lifetime$99.99
1 purchases

BookMarrow

One-time1
  • BookMarrow Unlimited$4.99

Questions

Is Readrrr free?
Readrrr is free to download, with in-app purchases available.
Is BookMarrow free?
BookMarrow is free to download, with in-app purchases available.
Do Readrrr or BookMarrow have ads?
Neither Readrrr nor BookMarrow shows ads.
Which is updated more often, Readrrr or BookMarrow?
Readrrr ships an update fortnightly, and BookMarrow fortnightly. Most recently, Readrrr was updated on October 12, 2026 and BookMarrow on October 13, 2026.

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