Comparison

4000基础必备英语单词 vs Echo Loop

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

Head to head
About

4000基础必备英语单词

Features
Read full description

4000基础必备英语单词-经典版 4000 Essential English Words (共6册) 内容包含课文正文、课后答案、图片、音频、中文翻译 包含磨耳朵、口语模仿、中英对照、单词卡片 9步学习步骤、10种测试方式、7种学习复习游戏 联系:bwbynn@163.com QQ群 753152718 (不用注册、不用联网、没有广告、没有内购,本地播放,方便学生随时随地学习)

About

Echo Loop

This app uses a science-based, eight-stage spaced repetition system to improve English listening and speaking skills. It guides users through blind listening, intensive listening, sentence repetition, and paragraph retelling, with AI feedback and vocabulary tools.

Highlights
  • Eight-stage spaced repetition learning
  • Blind and intensive listening modes
  • AI-assisted sentence repetition with feedback
  • Paragraph retelling with keyword generation
  • Bookmarking for sentences and vocabulary
  • Vocabulary flashcard review
  • Learning progress tracking
Features
Read full description

Echo Loop is a science-based English listening and speaking training app. It helps you turn unfamiliar audio into real understanding and build fluency through repetition and retelling. The app combines a complete listening and speaking training loop with spaced repetition. It automatically schedules review tasks, reminds you to practice, and guides you step by step, so you can focus on listening and speaking instead of managing the process yourself. 【Eight-stage spaced repetition】 Each audio item follows an eight-stage learning cycle: initial learning, same-day review, reviews on Days 1, 2, 4, 7, and 14, and completion on Day 28. The app automatically schedules each review to help turn short-term memory into long-term memory. 【Complete initial learning flow】 The initial learning stage includes four steps: • Blind Listening: Listen to the full audio without the transcript, get the general meaning, and rate the difficulty. • Intensive Listening: Listen sentence by sentence. For difficult sentences, view the transcript and save unfamiliar sentences and words. • Sentence Repetition: Repeat saved sentences with transcript support. The number of repetitions is adjusted based on difficulty, and each recording receives instant AI feedback. • Paragraph Retelling: Listen paragraph by paragraph and retell what you hear in your own words with keywords generated by the app. 【Review stages】 From Day 1 to Day 28, review focuses on blind listening, sentence repetition, and paragraph retelling. Retelling segments gradually become longer, helping you build a stronger link between listening input and speaking output. 【Multiple playback options】 Choose from full audio playback, sentence-by-sentence playback, and saved sentences only. You can also adjust repeat count, pauses between sentences, and retelling length. 【Bookmarked sentences and vocabulary】 • Save difficult sentences with one tap and review them across all your audio materials. • Use a built-in local dictionary with phonetic transcriptions, definitions, pronunciations, Collins star ratings, and exam tags for bookmarked words. • Saved words are linked to their source audio and original sentences, so you can learn vocabulary in context. 【Vocabulary flashcard review】 Review words with flashcards showing the word and pronunciation on the front, and definitions plus the original example sentence on the back. It also supports auto flip, smart sorting, and progress tracking. 【AI-assisted learning】 AI can automatically generate English subtitles. During intensive listening, you can view subtitles, AI translations, and grammar explanations. Subtitles can be shown as full sentences or thought groups, helping you recognize collocations in context instead of memorizing isolated words. 【Learning progress tracking】 Track your study streak, listening input, speaking output, and vocabulary growth. You can also resume anytime from where you left off. 【Free Practice Mode】 Besides the guided learning flow, you can also use Free Practice Mode. You can adjust playback speed, choose whether to show subtitles, and save difficult sentences and words. Import the English audio you want to understand quickly, and start practicing listening and speaking in a more effective way. Subscription Information Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your Apple ID account settings. Payment will be charged to your Apple ID account upon confirmation of purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.echo-loop.top/privacy

Screenshots

4000基础必备英语单词4 screens
Echo Loop4 screens

Verdict

The call

The clearest difference is price: Echo Loop at Free against 4000基础必备英语单词's $3.99. Echo Loop also leads on update cadence (every 5 days vs every 2 months). 4000基础必备英语单词's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement 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

Echo Loop is free to download; 4000基础必备英语单词 costs $3.99 up front. Echo Loop sells 2 in-app purchases, starting at $8.99 per month. 4000基础必备英语单词 asks for nothing beyond the download.

UpkeepUpdate frequency

4000基础必备英语单词 ships an update every 2 months, Echo Loop every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
4000基础必备英语单词 versus Echo Loop: the parameters behind the verdict, then further details
Parameter4000基础必备英语单词Echo Loop
Price$3.99Free — better
Rating—4.0 (11 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—11 — better
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size938 MB164 MB
Age rating4+4+
Developer水生 王Hangzhou Fengchen Hangqi Management Consulting Co., Ltd

In-app purchases

None

4000基础必备英语单词

No in-app purchases

2 purchases

Echo Loop

Subscriptions2
  • Echo Loop Plus Monthly$8.991 Month
  • Echo Loop Plus Annual1 Year trial$59.991 Year

Questions

Is 4000基础必备英语单词 free?
4000基础必备英语单词 costs $3.99, with no in-app purchases.
Is Echo Loop free?
Echo Loop is free to download, with in-app purchases available.
Do 4000基础必备英语单词 or Echo Loop have ads?
Neither 4000基础必备英语单词 nor Echo Loop shows ads.
Which is updated more often, 4000基础必备英语单词 or Echo Loop?
4000基础必备英语单词 ships an update every 2 months, and Echo Loop every 5 days. Most recently, 4000基础必备英语单词 was updated on October 30, 2026 and Echo Loop on October 31, 2026.

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