Comparison

BookBubble vs ReadNotes

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

Head to head
About

BookBubble

This app provides a spoiler-free wiki for books, unlocking information chapter by chapter as you read. It also helps you track reading sessions, organize your library, and set reading goals to build a consistent habit.

Highlights
  • Spoiler-free fan wiki
  • Chapter-by-chapter entry unlocking
  • Reading session tracking
  • Ambient reading music
  • Customizable book library
  • Reading goal setting
  • Calendar view of reading habits
Features
Read full description

That moment when a quick online search about a character spoils the whole plot of your book. That pain is why we built BookBubble. A fan-powered and spoiler-free Wiki that only unlocks, what you’ve actually read so far. A FAN WIKI THAT CAN'T SPOIL YOU - Look up any character, creature, location, item, or group in your book and only see what you've actually read so far. - Entries unlock chapter by chapter as you read - No more accidentally spoiling yourself while searching online - Contribute while reading and become part of the wiki READING SESSIONS - Track every session you spend in a book. - Log minutes read and chapters finished - Play ambient music while you read - Build a clear picture of your reading habit over time YOUR LIBRARY, YOUR WAY - Organize your books exactly how you read them. - Default Shelves for Currently Reading, TBR, DNF, and Finished - Create and add your own custom collections - Share or hide your shelves on your public profile CALENDAR & READING GOAL - See your reading habit take shape. - A built-in calendar shows exactly which day you read which book - Watch your reading time grow as time goes by - Set a yearly reading goal and track your progress toward it - Set notifications to make reading a habit Built for readers of fantasy, romantasy, and any book with worldbuilding too rich to hold in your head. Download BookBubble and dive into your books, chapter by chapter — spoiler-free.

About

ReadNotes

This app helps you remember what you read by taking notes while you read, cleaning them with AI, and generating key takeaways. It tracks your reading progress, builds a personal knowledge library, and offers spaced repetition flashcards.

Highlights
  • AI-powered note cleaning
  • Key takeaway generation
  • Reading progress tracking
  • Spaced repetition flashcards
  • Personal knowledge library
  • Reading statistics and streaks
  • Goodreads library import
Features
Read full description

ReadNotes is the reading tracker and AI note-taking app for people who want to remember what they read, not just finish books. Take notes while you read, clean them up instantly with AI, and generate a single key takeaway from each idea. Over time, ReadNotes builds your personal knowledge library from every book you finish. What you can do: • Write or record voice notes while reading • AI cleans up messy notes into clear, concise text • Generate one key takeaway per note — no rewriting needed • Track books across Reading, Finished, and Want to Read • Review what you learned with spaced repetition flashcards • See your reading stats, streaks, and knowledge by genre • Share insights with friends and see what they're reading • Import your Goodreads library in seconds • Export your notes as PDF Free users get limited AI usage per week. Upgrade to ReadNotes+ for Unlimited AI takeaways and PDF export. Got ideas or questions? Reach out to us at readnotesapp@gmail.com. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ PRIVACY POLICY: https://readnotes.vercel.app/privacy

Screenshots

BookBubble4 screens
ReadNotes4 screens

Verdict

The call

The clearest difference is in-app purchases: BookBubble at none against ReadNotes's 2. On price, update cadence, ads and device support 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. ReadNotes sells 2 in-app purchases, starting at $4.99 per month. BookBubble asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
BookBubble versus ReadNotes: the parameters behind the verdict, then further details
ParameterBookBubbleReadNotes
PriceFreeFree
Rating—5.0 (5 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—5 — better
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size60 MB14 MB
Age rating17+4+
DeveloperTimon GrasslAKSHAT ROHELLA

Customer experience

BookBubble

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ReadNotes

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BookBubble

No in-app purchases

2 purchases

ReadNotes

Subscriptions2
  • ReadNotes+ Monthly$4.991 Month
  • ReadNotes+ Annual$19.991 Year

Questions

Is BookBubble free?
BookBubble is free to download, with no in-app purchases.
Is ReadNotes free?
ReadNotes is free to download, with in-app purchases available.
Do BookBubble or ReadNotes have ads?
Neither BookBubble nor ReadNotes shows ads.
Which is updated more often, BookBubble or ReadNotes?
BookBubble ships an update monthly, and ReadNotes monthly. Most recently, BookBubble was updated on November 5, 2026 and ReadNotes on October 31, 2026.

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