Comparison

HeyReader vs Yidou Words

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

Head to head
About

HeyReader

Learn languages by reading real-world content. Subscribe to RSS feeds or import your own eBooks to practice vocabulary, understand complex sentences, and translate as you read. Enjoy a distraction-free, customizable reading experience.

Highlights
  • RSS feed subscriptions
  • Import PDF & EPUB books
  • Vocabulary highlighting & saving
  • Smart sentence splitting
  • Sentence & paragraph translation
  • Adjustable fonts & night mode
Features
Read full description

HeyReader is a multilingual reading app built around RSS subscriptions and imported eBooks, designed to help you learn English and other languages through real content. Subscribe to foreign-language websites, blogs, and news via RSS, or import your own PDF and EPUB books. HeyReader supports vocabulary highlighting, smart sentence splitting, and translation tools to make language learning natural and effective. Learn Languages Through Reading * Support for English and multilingual reading * Learn languages through real-world articles and books * Ideal for English learners and multilingual learners Read Content You Choose * Add your own RSS feeds * Read articles, blogs, and news in multiple languages * Learn from content that truly interests you Import PDF & EPUB Books * Read foreign-language PDF and EPUB eBooks * Learn through original books and study materials * Improve language skills in real context Build Vocabulary Naturally * Automatically highlight key words * Save words to your vocabulary list * Learn words and phrases in context Smart Sentence Splitting * AI-powered sentence segmentation * Understand long and complex sentences more easily Translation Support When Needed * Sentence and paragraph translation * Support comprehension without interrupting reading A Reading Experience Made for Language Learners * Adjustable fonts and text size * Night mode for comfortable reading * Clean and distraction-free interface Perfect for: * English learners * Multilingual learners * Anyone improving language skills through reading Turn everyday reading into real language learning with HeyReader. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://www.heyreader.com/terms.html Privacy Policy: https://www.heyreader.com/privacy.html

About

Yidou Words

Features
Read full description

YidouWords is an intelligent reading and language-learning app that combines AI assistance, audiobook playback, and practical study tools. Import EPUB3, M4B, PDF, text files, and other content. Improve your listening, speaking, reading, and writing through authentic materials with AI translation, contextual analysis, smart vocabulary highlighting, audiobook playback, real-time video subtitles, vocabulary review, and language practice. CORE FEATURES AI-Powered Assistance - Customize your translation, speech, and AI providers - Understand words and sentences in context - Use AI dictionaries, sentence analysis, and grammar explanations - Ask questions anytime and receive detailed, tutor-like explanations Audiobooks and Listening Practice - Supports EPUB3 audio content and M4B audiobooks - Read and listen at the same time to improve comprehension and develop a natural feel for the language - Supports multiple text-to-speech engines - Supports offline voices and high-quality original audiobook recordings - Ideal for intensive listening, shadowing, and speaking practice - AI multi-voice narration for more natural dialogue and character distinction Smart Vocabulary Learning - Look up words and sentences instantly without interrupting your reading - Automatically highlight unfamiliar and important vocabulary - Understand word meanings and usage based on context - Review saved vocabulary to strengthen long-term memory - Analyze sentence structure and components - Explore words, characters, phrases, and paragraphs with in-depth AI analysis - Use bionic reading to improve focus and reading efficiency - Practice with vocabulary review quizzes Immersive Reading and Learning - Import your own books, magazines, articles, and study materials - Display original text and translations together intelligently - Filter and display translations according to your language level - Learn vocabulary and expressions through authentic context - Build comprehensible input from materials that would otherwise feel too difficult Web and Video Learning - Tap words on web pages for instant definitions - Learn directly from online articles and other web content - Generate real-time Chinese subtitles for online videos - Combine video, listening, vocabulary, and contextual learning in one place Learning Progress Track your learning and see your progress over time: - Saved vocabulary - Reading time - Number of items read - Vocabulary learned - New-word accumulation and review progress WHO IS YIDOU FOR? Independent English Learners - Learn English naturally through reading and listening - Use AI assistance to make challenging material easier to understand Advanced English Learners - Improve reading skills with English news, magazines, and original books - Build a stronger sense of natural usage and authentic expression Listening and Vocabulary Learners - Develop listening skills and vocabulary systematically - Work with authentic materials without being discouraged by their difficulty IELTS and TOEFL Learners - Build long-term language exposure and a natural feel for English - Use Yidou as a daily learning and input tool rather than a test-drilling app Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yidouwords.github.io/yidouwords-privacy/

Screenshots

HeyReader4 screens
Yidou Words4 screens

Verdict

The call

The clearest difference is iOS requirement: Yidou Words at 15.6 against HeyReader's 18.0. 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. HeyReader sells 2 in-app purchases, starting at $4.99 per month and Yidou Words sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

HeyReader ships an update every 3 days, Yidou Words every 4 days. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 9 level
HeyReader versus Yidou Words: the parameters behind the verdict, then further details
ParameterHeyReaderYidou Words
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 days — betterEvery 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.6 — better
Further details — not scored
Size13 MB208 MB
Age rating4+17+
DeveloperShandong Linhu Cultural Development Co., Ltd.艳 常

In-app purchases

2 purchases

HeyReader

Subscriptions2
  • HeyReader Pro$4.991 Month
  • HeyReader Pro Max$9.991 Month
2 purchases

Yidou Words

Subscriptions1
  • 一兜英语 Pro$0.991 Month
One-time1
  • 一兜英语Pro永久版$4.99

Questions

Is HeyReader free?
HeyReader is free to download, with in-app purchases available.
Is Yidou Words free?
Yidou Words is free to download, with in-app purchases available.
Do HeyReader or Yidou Words have ads?
Neither HeyReader nor Yidou Words shows ads.
Which is updated more often, HeyReader or Yidou Words?
HeyReader ships an update every 3 days, and Yidou Words every 4 days. Most recently, HeyReader was updated on September 14, 2026 and Yidou Words on September 18, 2026.

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