Comparison

OneBook vs woRds2

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

Head to head
About

OneBook

This app offers a comprehensive language learning experience by integrating audiobooks, podcasts, and videos. It features AI-powered tools for instant text explanations, word lookup, and subtitle generation, supporting over 60 languages.

Highlights
  • AI Instant Tutor for text explanations
  • Automatic subtitle generation for audiobooks
  • Real-person narration for eBooks
  • Interactive PDF audio books
  • Efficient word and sentence lookup
  • Vocabulary level highlighting
  • Multiple reading modes
Features
Read full description

OneBook is a multilingual learning hub for shadowing audiobooks, podcasts, and videos—with AI context lookup while you read and listen. Core Features 【Audiobook Deep Learning】 【Exclusive Subtitle Generation】: First to support auto-generating synchronized subtitles for m4b/Audible audiobooks. Millions of Audible titles become readable and learnable. 【Real-Person Narration for eBooks】: Supports epub3 books narrated by real people (not synthetic TTS), enabling synchronized listening and reading. 【Interactive PDF Audio Books】: Tap on text within PDF picture books to play the corresponding audio, creating an interactive read-along experience. 【Intelligent Reading & Lookup】 【Efficient Word & Sentence Lookup】: Tap to look up a word, long-press to look up a sentence. Incorporates a feature similar to Kindle's Word Wise, significantly reducing lookup effort. 【AI Instant Tutor】: Select any text for instant AI explanations on grammar, context, sentence structure, and more—like having a personal teacher on hand. 【Vocabulary Level Highlighting】: Words are automatically color-coded based on difficulty, making key terms stand out at a glance. 【Multi-Mode Immersive Experience】 【Multiple Reading Modes】: Includes ADHD Bionic Reading, Cinematically-Scrolling, Immersive Focus Mode, Background Music Reading, Shadowing Practice, and more to suit different scenarios. 【Whisper-Style Audiobook】: Supports offline listening with optional ambient white noise, crafting a comfortable and focused listening experience. 【All-Platform Resource Integration】 Learn directly from videos and audio on platforms like YouTube, Bilibili, and Apple Podcasts. Supports OPDS catalogs for easy subscription to news, foreign periodicals, and magazines. Import personal resources via WebDAV or cloud storage, with real-time synchronization across multiple devices. 【Multilingual & Customizable】 Supports learning for 60+ global languages, including German, French, Italian, Spanish, and other less-commonly-taught languages. Compatible with importing any MDX dictionary file, allowing you to use your preferred word references. Supports custom AI models to tailor the Q&A experience to your needs. Learning Management & Statistics Pre-study new words before reading, with automatic tracking during your session. Detailed reading statistics and insights to help you track progress and outcomes. Why Choose Us? All in One: A single app integrates audiobooks, reading, video learning, vocabulary management, AI Q&A, and resource syncing. Constantly Evolving: Continuously updated with new features and improvements, with more exciting additions on the way. Welcome to Download and Experience Begin your efficient, immersive, and personalized language learning and reading journey today. Privacy Policy: https://www.onebook2025.top/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

woRds2

Features
Read full description

woRds2 是一款結合閱讀與單字學習的 App。 【主要功能】 • 瀏覽文章並即時學習生詞 • 文字轉語音(TTS)朗讀,支援多語言與多種聲音 • 單字清單管理,隨時複習 • 背景自動更新內容 • 無限捲動閱讀體驗 • 通知提醒,養成每日學習習慣 【適合對象】 • 學習外語的學生與上班族 • 想透過閱讀擴充詞彙的人 • 喜歡利用通勤時間學習的使用者

Screenshots

OneBook4 screens
woRds24 screens

Verdict

The call

The clearest difference is in-app purchases: woRds2 at none against OneBook's 2. woRds2 also leads on iOS requirement (13.0 vs 15.0). 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. OneBook sells 2 in-app purchases, starting at $8.00 per month. woRds2 asks for nothing beyond the download.

UpkeepUpdate frequency

OneBook ships an update weekly, woRds2 every 5 days. Both last shipped on November 6, 2026.

Scorecard2 real differences · 8 level
OneBook versus woRds2: the parameters behind the verdict, then further details
ParameterOneBookwoRds2
PriceFreeFree
Rating5.0 (64 ratings) — better—
Positive reviews97.3% of reviews—
Number of ratings64 — better—
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size224 MB18 MB
Age rating4+4+
Developer翊 林Chiang Kao

In-app purchases

2 purchases

OneBook

Subscriptions1
  • OneBook Premium Monthly$8.001 Month
One-time1
  • AI Pack 1000$5.00
None

woRds2

No in-app purchases

Questions

Is OneBook free?
OneBook is free to download, with in-app purchases available.
Is woRds2 free?
woRds2 is free to download, with no in-app purchases.
Do OneBook or woRds2 have ads?
Neither OneBook nor woRds2 shows ads.
Which is updated more often, OneBook or woRds2?
OneBook ships an update weekly, and woRds2 every 5 days. Most recently, OneBook was updated on November 6, 2026 and woRds2 on November 6, 2026.

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