Comparison

Bukai vs Fox Reader

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

Head to head
About

Bukai

Features
Read full description

Bukai is a beautifully simple reader for EPUB and TXT—built for focus and powered by state-of-the-art, on-device AI that keeps every page personal. It uses a high-quality, self-developed parsing, layout, and rendering engine, with no dependency on any web browser. Why readers choose Bukai * EPUB & TXT support – Smooth reading for both formats, including very large TXT files with on-demand loading. * AI Read Aloud – Natural narration with 100+ voices, including American & British female voices and Chinese female & male voices. * AI Summaries – Clear, high-quality overviews of the current chapter or the entire book—great for grasping key ideas fast. * Privacy by design – All intelligence runs locally on the device. No account, no ads, no data collection. * Beautiful typography – Clean, uncluttered layouts that make long reading comfortable. * Sleep timer – Set playback to stop automatically. Made for focused reading * Minimal, elegant interface that puts the text first. * Fast, reliable performance from first page to last. The on-device advantage * Best-in-class AI features without sending content to servers—reading stays personal and secure, even offline. Start the next chapter with Bukai: a reader that respects attention, time, and privacy.

About

Fox Reader

Transform your personal library into lifelike audiobooks with on-device AI narration. Read along word-by-word, get instant chapter summaries, and track your reading habits. All your books and notes stay private on your device.

Highlights
  • On-device AI audiobook narration
  • Offline listening
  • Word-by-word synchronized reading
  • AI chapter summaries
  • Customizable reading themes and fonts
  • Highlighting, notes, and vocabulary builder
  • Reading progress tracking and goal setting
  • Automatic library organization
Features
Read full description

Fox Reader turns ANY BOOK you own INTO a lifelike AUDIOBOOK, ENTIRELY OFFLINE on your iPhone. Import an EPUB, PDF, or MOBI, press play, and listen in natural, expressive voices. No cloud. No account. Nothing leaves your device. It's a real reader, too: follow every word as it's spoken, study what you read, and track the habit, all in a beautiful library that's yours alone. LISTEN TO ANY BOOK, OFFLINE Lifelike, on-device AI narration for anything you import. Choose from multiple expressive voices and listen anywhere your iPhone goes: car speakers, AirPods, or a walk with no signal. No streaming, no buffering, no internet required. FOLLOW ALONG, WORD BY WORD Every line highlights in sync with the narration, so reading and listening reinforce each other. Ideal for learning a new language, building comprehension, supporting dyslexia or ADHD, or simply keeping your place when you glance down. Fox automatically skips tables of contents, front matter, and decorative clutter, so you only hear the story. CATCH UP WITH AI SUMMARIES Lost the thread? Fox generates instant 3-bullet recaps of the last few pages, your current chapter, or the chapter you just finished: so you can jump back in within seconds. A READER DESIGNED AROUND YOU Eight hand-crafted themes, including Sepia, Dark, Forest, and Twilight. Fine-tune fonts, sizes, weights, line spacing, margins, and alignment. Smooth page-curl animations and orientation lock round it out. HIGHLIGHTS, NOTES & VOCABULARY Highlight passages in six colors and attach notes to any range of words. Save words to a personal vocabulary list, then make them stick with five AI word games: Quiz, Puzzle, Hangman, Word Guess, and Riddle Rush. SEE YOUR READING GROW Every reading and listening session is tracked. Set daily and yearly goals, build streaks, and watch a 14-day activity chart with breakdowns by author and format. A LIBRARY THAT ORGANIZES ITSELF Build custom collections with emojis and pin favorites to your Home Screen. Smart collections auto-group your books: Currently Reading, Almost Finished, Short Reads, Long Reads, and more — while AI genre classification sorts the rest for you. TRACK SERIES & DISCOVER MORE Follow multi-book series from start to finish, keep a wishlist of books you haven't imported yet, and find new titles from authors you already love. Import your Goodreads library by CSV. SYNC ACROSS YOUR DEVICES Your library, reading progress, highlights, notes, and preferences move with you over iCloud. Start a chapter on iPhone, finish it on iPad, exactly where you left off. PRIVATE BY DESIGN The neural voices, AI summaries, and genre sorting all run on your device — not on a server. No account, no tracking, no uploads. Your books and your notes stay yours. SUPPORTED FORMATS EPUB · PDF · MOBI · TXT. Import from Files, email, iCloud Drive, or any document source. Your whole library, in your ears: and nothing leaves your phone. Download Fox Reader and press play. Privacy Policy: https://salmanahmad09.github.io/SalmanApps/privacy.html Terms of Use: https://salmanahmad09.github.io/SalmanApps/terms.html

Screenshots

Bukai4 screens
Fox Reader4 screens

Verdict

The call

The clearest difference is price: Fox Reader at Free against Bukai's $4.99. Bukai's advantage is in-app purchases (none vs 3) and update cadence (every 6 days vs every 5 weeks). On 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

Fox Reader is free to download; Bukai costs $4.99 up front. Fox Reader sells 3 in-app purchases, starting at $4.99 per month. Bukai asks for nothing beyond the download.

UpkeepUpdate frequency

Bukai ships an update every 6 days, Fox Reader every 5 weeks. The most recent releases landed on September 8, 2026 and July 1, 2026 respectively.

Scorecard4 real differences · 5 level
Bukai versus Fox Reader: the parameters behind the verdict, then further details
ParameterBukaiFox Reader
Price$4.99Free — better
Rating—5.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 6 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better26.2
Further details — not scored
Size38 MB390 MB
Age rating4+4+
Developer社桥 郑Salman Ahmad

In-app purchases

None

Bukai

No in-app purchases

3 purchases

Fox Reader

Subscriptions3
  • Monthly7 Days trial$4.991 Month
  • Yearly Discounted7 Days trial$11.991 Year
  • Yearly7 Days trial$29.991 Year

Questions

Is Bukai free?
Bukai costs $4.99, with no in-app purchases.
Is Fox Reader free?
Fox Reader is free to download, with in-app purchases available.
Do Bukai or Fox Reader have ads?
Neither Bukai nor Fox Reader shows ads.
Which is updated more often, Bukai or Fox Reader?
Bukai ships an update every 6 days, and Fox Reader every 5 weeks. Most recently, Bukai was updated on September 8, 2026 and Fox Reader on July 1, 2026.

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