Comparison

BookFusion vs Mythos

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

Head to head
About

BookFusion

Manage, read, and organize your entire eBook collection across all devices with cloud synchronization. Customize your reading experience with extensive settings, highlights, and annotations. Supports various formats and offers text-to-speech functionality.

Highlights
  • Cross-platform eBook reader
  • Cloud synchronization
  • Organize with virtual bookshelves
  • Highlights and annotations
  • Text-to-Speech (TTS)
  • Send to Kindle
  • Calibre integration
Features
Read full description

Thousands of readers use BookFusion to manage, read and enjoy over 2 million eBooks. BookFusion is the best cross platform eBook reader and manager with cloud sync that allows you to easily read, organize and manage your eBooks across all your devices. ◇ Features ◇ Integrated Reader - Read all your EPUB, PDF, & CBZ/CBR eBooks both online and offline with clean and intuitive interface . Extensive Reader Settings - Customize your reading experience from vertical/horizontal margins, line spacing, fonts, bold/italics, colors and much more. Seamless Syncing - Sync your reading progress, highlights & annotations, eBooks and bookmarks across all devices. Pick up exactly where you left off. Organize & Manage - Easily organize and access all your eBooks seamlessly whether offline or online. Organize your eBooks using virtual bookshelves or place them into Series. Quickly find the eBook you are looking for using the category, tags or author filters. The perfect eBook Organizer & eBook Manager in one. Light & Dark Mode – Dark or Light the preference is yours! Highlights & Annotations - Highlight with your preferred colors and add tags to highlights to keep them organized. Sort your highlights by date or reading progress and easily export them to use in other apps in CSV, Markdown, HTML and PDF formats eBook Cloud - Keep your entire eBook collection at the tips of your fingers by storing them in the cloud and downloading them to read offline only when you need to. Any title just a click away. Text-to-Speech (TTS) - Listen to your favorite eBooks with Apple's native natural-sounding text-to-speech feature. Customize reading speed, voice and accessibility. Ideal for audiobook lovers busy lifestyles and accessible for all readers. Send to Kindle – Organize and quickly send your next read to your Kindle device with one click. Calibre Integration - The perfect Calibre Ally. Sync metadata, custom columns, series, tags and incremental updated PDF & EPUB files to all your devices. Your entire Calibre library on your devices when you need it. Vertical Writing Support - Read Chinese, Vietnamese, Korean, and Japanese eBooks with ease. Image/Area Highlights & Annotations (PDFs) - Easily annotate/highlight images, tables, graphs or even text. Any element at all in your PDF can now be highlighted and annotated. EPUB 3 Support - With support for the full EPUB 3 spec. You can read eBooks with rich interactivity support that includes video, audio, Q&A, games and much more. Widgets – Quickly view and jump back into your last read, currently reading, or highlights right from your home screen with iOS Widgets. Multi-Window Support (iPadOS & macOS) – Open multiple books side by side, drag books into Split View, or read and view highlights simultaneously. Perfect for multitasking, studying, or comparing texts. NOTE: You will need to install the BookFusion Calibre Plugin to sync your eBooks to all your devices. See the tutorial at https://support.bookfusion.com/hc/en-us/articles/360018852052-Installing-Using-the-BookFusion-Plugin-for-Calibre Open With - Don’t like the integrated reader? Use the open with functionality to send and read your eBooks with your preferred app. No lock-in Metadata & Book Details – Know what an eBook is about at a glance or easily edit the cover, description, author tags and other information. Additional Formats Supported via Web - These include: AZW, AZW3, AZW4, CBC, CHM, DJVU, DOCX, FB2, FBZ, HTML, HTMLZ, LIT, LRF, PRC, PDB, PML, RB, RTF, SNB, TCR, TXT, TXTZ in a single app. These must be uploaded via the Web App before using the iOS App Choose from over 70,000 eBooks ◇ Other ◇ Have feedback or just want to chat? We would love to hear from you. Drop us a line at support@bookfusion.com or join us for a chat on Discord at https://www.discord.gg/7v34UYq Terms of Service - https://www.bookfusion.com/terms Privacy Policy - https://www.bookfusion.com/privacy

About

Mythos

This intelligent reader uses AI to transform books into interactive experiences. Highlight any text for instant summaries, explanations, or contextual insights, enhancing comprehension and engagement with your reading material. Supports EPUB and PDF formats for a personalized learning journey.

Highlights
  • AI-powered reading assistance
  • Contextual text explanations
  • Distraction-free interface
  • EPUB and PDF support
  • Personalized learning insights
Features
Read full description

Understand anything you read instantly. Mythos is an AI reading companion that turns highlights into insights, right on the page. Highlight a passage. Mythos detects what you need — a summary, an explanation, a concept breakdown — and delivers it inline. No typing, no switching apps, no interruption to your flow. Built for readers who want to go deeper: • Instant Understanding: Highlight any sentence and get clear explanations, summaries, or context in one tap. • Reads Your Intent: Mythos detects whether you need a character recap, a concept breakdown, or a translation, and responds accordingly. • Zero Friction: Everything happens inline. No chatbots, no sidebars, no copy-paste workflows. • Deep Focus Mode: A clean, distraction-free reading environment. • Your Library, Your Way: Import EPUBs and PDFs. Read what you already own. • Learns With You: Mythos adapts to your reading style and helps you explore deeper layers of meaning over time. Whether you're a student working through dense textbooks, a professional digesting reports, or a curious reader tackling challenging nonfiction - Mythos makes every book more accessible. Download Mythos and start reading with understanding. --- Terms of Service: https://www.notion.so/Terms-of-Service-2b3ad7d0ef7f800fbdcded8060cb6d12

Screenshots

BookFusion4 screens
Mythos3 screens

Verdict

The call

The clearest difference is rating: BookFusion at 4.7 against Mythos's 4.2. BookFusion also leads on ratings volume (505 vs 6). Mythos's advantage is review sentiment (86% vs 77%). 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. BookFusion sells 6 in-app purchases, starting at $1.99 per month and Mythos sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

BookFusion holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: BookFusion has 505 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 77% of BookFusion's written reviews are positive against 86% of Mythos's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

BookFusion ships an update every 10 days, Mythos every 2 weeks. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
BookFusion versus Mythos: the parameters behind the verdict, then further details
ParameterBookFusionMythos
PriceFreeFree
Rating4.7 (505 ratings) — better4.2 (6 ratings)
Positive reviews76.6% of reviews85.7% of reviews — better
Number of ratings505 — better6
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size157 MB77 MB
Age rating12+4+
DeveloperBookFusionSami Ibrahim

Customer experience

BookFusion

All ratings505 ratings
Positive92.5%
Neutral2.8%
Negative4.8%
Written reviews222 reviews
Positive76.6%
Neutral9.5%
Negative14.0%

Mythos

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Bugs and requests

BookFusion

Reported bugs

5 issues
  • Highlights and notes not always saving properly
  • Reading position sometimes resets unexpectedly
  • Widget not functioning as expected
  • Occasional crashes and freezes
  • Issues with importing certain ebook formats

Requested features

6 requests
  • Add page numbers instead of just percentages
  • Implement a true dark mode
  • Improve PDF viewing and annotation capabilities
  • Add support for DJVU format
  • Provide an option to purchase a lifetime license
Show 1 more
  • Implement better organization tools like folders/shelves

Mythos

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

BookFusion

Subscriptions6
  • Casual Monthly$1.991 Month
  • Advanced Monthly$4.991 Month
  • Power Monthly$9.991 Month
Show 3 more
  • Casual Yearly$18.991 Year
  • Advanced Yearly$47.991 Year
  • Power Yearly$95.991 Year
2 purchases

Mythos

Subscriptions2
  • Mythos Premium$9.991 Month
  • Mythos Premium Annual14 Days trial$99.991 Year

Questions

Is BookFusion free?
BookFusion is free to download, with in-app purchases available.
Is Mythos free?
Mythos is free to download, with in-app purchases available.
Which has better reviews, BookFusion or Mythos?
BookFusion is rated higher. BookFusion averages 4.7 out of 5 from 505 ratings, while Mythos averages 4.2 from 6 ratings.
Do BookFusion or Mythos have ads?
Neither BookFusion nor Mythos shows ads.
Which is updated more often, BookFusion or Mythos?
BookFusion ships an update every 10 days, and Mythos every 2 weeks. Most recently, BookFusion was updated on September 24, 2026 and Mythos on September 21, 2026.

Other comparisons