Comparison

Casebound vs Rubrai

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

Head to head
About

Casebound

Organize your physical and digital book collection with detailed tracking of ownership, formats, and reading progress. Visualize your library on a customizable bookshelf and track reading sessions with detailed statistics. Capture new books quickly via barcode or cover scanning.

Highlights
  • Separate library and custom lists
  • Track multiple formats per book
  • Customizable bookshelf visualization
  • Session-based reading time and page tracking
  • Barcode and cover scanning for fast entry
  • Book club and lending features
Read full description

For serious readers and library builders. People with real shelves who want to know exactly what they own, track their reading honestly, and enjoy the collection they have built. LIBRARY AND LISTS, FINALLY SEPARATE Most book apps blend your shelves, your reading state, and your custom lists into one jumble. When you own 500 books across overlapping shelves, you cannot cleanly answer "what do I actually own?" Casebound keeps your library, a real catalogue with ownership, format, and reading status, separate from your lists, which are tags you layer on top. A book lives in your library once. Lists are zero or many tags applied to it. ONE BOOK, EVERY FORMAT Own the hardcover. Listening to the audiobook. Halfway through the Kindle. That is one library entry with three format records, each tracked separately. Ownership lives on the format, so you can own the hardcover and borrow the audiobook from the library. Stats stay honest: hours for audio, pages for physical, locations or percent for ebooks. No lossy conversion between them. Books finished counts any format. A SHELF WORTH SHOWING Your library is not just a spreadsheet. Arrange it on a real bookshelf, in a floating or framed case, with spine widths that scale to actual page counts. Stack books the way you do at home. Photograph your real spines and see them on the shelf. Earn decor as you read and place it where you like. SESSIONS THAT COUNT Track reading time and pages session by session. Pause, resume, or log a session you forgot to start. See weekly, monthly, yearly, and lifetime stats, plus a reading calendar built from your book covers and a year in review when the year closes. Goals are measured in pages and time, never in book counts. CAPTURE A LIBRARY FAST Scan a barcode and Casebound looks up the metadata automatically. Point the camera at a cover when there is no barcode. Pair a Bluetooth scanner and add a whole shelf in one sitting. Quick add drops a book in with a single tap. Found a wrong page count? Fix it once and the correction improves the shared record for everyone. READ WITH OTHER PEOPLE, OR DO NOT Follow readers whose taste you trust and see what they are finishing. Rate and review books, and read reviews from everyone else. Start or join a book club with real discussion threads. Lend a book and track who has it and how far along they are. Send a book straight to a friend when you know it is for them. None of it is mandatory. Privacy is per book, there is no public profile by default, and you decide what, if anything, is visible. FREE IS USEFUL. PRO IS POWER. Free includes your unlimited library on every device you sign in on, session tracking, streaks and goals, ISBN and cover scanning, reviews, following, lending, friend recommendations, import and export, per-book privacy, and up to 5 custom lists. Pro ($4.99/month or $29.99/year) unlocks unlimited custom lists, advanced stats and insights, unlimited book clubs, the customizable bookshelf, and the Sepia theme. OPINIONATED Casebound measures reading in pages and hours, not in books finished, because book-count goals quietly push people toward shorter books. Your library and your lists stay separate structures, because collapsing them is what broke every app that came before. If those choices are not for you, this is not the right app, and that is okay. Casebound is a product of Pixel Master Technologies LLC. Contact: support@pixel-master.com Casebound Pro is an auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase and renews unless auto-renew is turned off at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://casebound.co/privacy

About

Rubrai

Features
Read full description

Rubrai is built to hold the bond you have with the books you read. Most reading apps count how many books you finished. Rubrai does that too, but it cares about something else: that years from now you can still find what you were thinking while you read, which line reached you, and why. YOUR LIBRARY • Read, reading and want-to-read on separate shelves • Cover search built in — type the title, it finds the rest • Rating, page count, tags, start and finish dates • Daily page log and a yearly reading goal YOUR NOTES • As many written notes per book as you like • Leave a voice note — it is transcribed as you speak • Photos of the pages you loved • "Feelings and spaces": favourite quote, the character you remember, the place you imagined… you choose the heading JOURNAL AND MONTH-END REVIEW • Dated, free-form notes that aren't tied to a single book • At the end of each month, write what that month of reading was like RUBOT, YOUR READING COMPANION Rubot reads what you wrote — your notes, your voice notes, the feelings you recorded — and reflects with you on it. It does not summarise the book or review it, and it will not spoil what you have not reached. It asks you one honest question and waits. It answers in whatever language you write to it in. BOOK CLUBS • Start your own club or join with an invite code • Shared shelf, notes, questions and chat • In Questions, everyone sees each other's questions and answers them • Report any post and block anyone, in one tap DISCOVER • Your reading habit: how much you read, which genres you lean towards • Book suggestions drawn from your own tags SIX LANGUAGES Turkish, English, German, French, Spanish and Arabic. PRIVACY Your library is entirely private. Your notes, voice notes and the spaces where you write how you felt are visible only to you — enforced at the database level, so no other user can reach your records. No ads, no tracking, no analytics software. We do not sell your data to anyone. Voice notes are transcribed using your device's own speech recognition; if the language model is installed on your device, your voice never leaves it. Rubot runs on our server, not in the app, and it only ever receives the notes for the book you have open. Your library is never used to train anyone's model. WHAT YOU SHOULD KNOW • Photos and voice notes are saved to your account, so they come back when you sign in on a new phone. Files added in older versions of the app may exist only on the device they were recorded on. • Transcription depends on your device's speech recognition support and will not perform equally in every language. • Rubot is AI. It can be wrong, and it is not a substitute for your own reading. RUBRAI PRO Rubot, direct messaging, personalised book recommendations, creating a club and joining a club are included in Pro. Monthly or yearly. The subscription renews automatically; you can cancel any time in your Apple ID settings. Terms of Use: https://www.b2io.com/rubrai/terms Privacy Policy: https://www.b2io.com/rubrai/privacy

Screenshots

Casebound4 screens
Rubrai4 screens

Verdict

The call

Casebound and Rubrai are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Casebound sells 2 in-app purchases, starting at $4.99 per month and Rubrai sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Casebound versus Rubrai: the parameters behind the verdict, then further details
ParameterCaseboundRubrai
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS16.416.4
Further details — not scored
Size87 MB52 MB
Age rating4+4+
DeveloperPixel Master Technologies LLCB2io

In-app purchases

2 purchases

Casebound

Subscriptions2
  • Casebound Pro Monthly$4.991 Month
  • Casebound Pro Annual$29.991 Year
2 purchases

Rubrai

Subscriptions2
  • Rubrai Pro Monthly$0.991 Month
  • Rubrai Pro Yearly$9.991 Year

Questions

Is Casebound free?
Casebound is free to download, with in-app purchases available.
Is Rubrai free?
Rubrai is free to download, with in-app purchases available.
Do Casebound or Rubrai have ads?
Neither Casebound nor Rubrai shows ads.

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