Comparison

CapWords vs PolyEcho

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

Head to head
About

CapWords

Capture words from real life using your camera and instantly create smart flashcards. AI provides definitions with context, and a spaced repetition system helps you remember them. Perfect for students, travelers, and professionals looking to expand their vocabulary.

Highlights
  • AI text recognition from photos
  • AI-powered definitions with context
  • Photo-linked vocabulary flashcards
  • Intelligent spaced repetition review
  • Progress tracking
  • Offline word bank
  • Multiple language support
Features
Read full description

⊕ Apple Design Awards 2025 Winner ⊕ App Store Awards App of the Year ⊕ App Store APP OF THE DAY ⊕ App Store Editor's Choice Turn the world into your vocabulary book. CapWords is the first app that lets you capture words from real life and instantly turn them into smart flashcards. See an interesting word on a sign, book, or screen? Just snap a photo, and CapWords will recognize the text, provide AI-powered definitions, and add it to your personal vocabulary library. HOW IT WORKS • Point your camera at any text • AI instantly recognizes and extracts words • Get smart definitions with context • Words automatically saved to your vocabulary • Review with intelligent spaced repetition WHY CAPWORDS? Traditional vocabulary apps make you type words manually or browse pre-made lists. CapWords changes that completely. CAPTURE FROM REAL LIFE See a word while reading, traveling, or studying? Snap it. The photo becomes your memory anchor, helping you remember where and when you learned each word. AI-POWERED UNDERSTANDING Our AI doesn't just give you dictionary definitions. It analyzes context from your photo to provide relevant meanings, example sentences, and usage notes. SMART REVIEW SYSTEM Forget about forgetting. CapWords uses spaced repetition algorithms to remind you to review words just before you'd forget them. VISUAL MEMORY BOOST Studies show visual context dramatically improves retention. Each word stays connected to the image where you found it. PERFECT FOR ⊕ Students - Build vocabulary from textbooks and articles ⊕ Travelers - Learn local words from signs and menus ⊕ Readers - Capture unfamiliar words from books ⊕ Professionals - Master industry terminology ⊕ Test Prep - GRE, TOEFL, IELTS vocabulary building FEATURES ⊕ AI recognizes words instantly ⊕ Photo-linked flashcards ⊕ Spaced repetition review ⊕ Progress tracking ⊕ Offline word bank ⊕ Export to other apps ⊕ Multiple language support LEARNING BACKED BY SCIENCE CapWords combines three proven learning techniques: 1. Visual Association - Images boost memory retention by 65% 2. Active Capture - Finding words yourself beats passive lists 3. Spaced Repetition - Review at optimal intervals Stop typing words into apps. Start capturing them from life. Download CapWords and turn every moment into a learning opportunity. FEEDBACK & SUPPORT Questions or ideas? We’d love to hear from you: support@capwords.app LEGAL Privacy Policy: https://capwords.app/privacy Terms of Use: https://capwords.app/terms

About

PolyEcho

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学外语不想再从香蕉苹果天气问路开始? 让我们直接从自己感兴趣的话题开始,让ai把任何外语的内容都降低到能理解的程度,直接把自己丢入另一语言的世界里吧! 【核心功能】 1. 单词学习,采用延伸出各种文化含义的词典,单词组成的最小语境故事,让单词成为另一语言世界鲜活的向导,不再是无意义的符号 2. AI对话功能,将各种有趣但外语学习者难以全然理解的内容转换成易于理解的对话,回到人类的对话本能,辅以AI的润色讲解与翻译,让人们得以在新技术的帮助下,直接补足自己的语言水平开始进行有意义的对话,进行更有意义、成就感的学习。 【使用条款】:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CapWords4 screens
PolyEcho4 screens

Verdict

The call

The clearest difference is iOS requirement: PolyEcho at 13.0 against CapWords's 17.0. 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. CapWords sells 6 in-app purchases, starting at $4.99 per month and PolyEcho sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level
CapWords versus PolyEcho: the parameters behind the verdict, then further details
ParameterCapWordsPolyEcho
PriceFreeFree
Rating4.7 (545 ratings) — better—
Positive reviews71.1% of reviews—
Number of ratings545 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size235 MB207 MB
Age rating4+4+
DeveloperHappyPlan Tech楷博 尚

Bugs and requests

CapWords

Reported bugs

1 issue
  • Some website links not working properly

Requested features

5 requests
  • Add ability to import existing flashcards
  • Integrate with other language learning apps
  • Provide option to change native language
  • Add home screen widgets
  • Expand object description capabilities

PolyEcho

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

CapWords

Subscriptions6
  • Premium-Monthly-b$4.991 Month
  • Premium-Monthly$5.991 Month
  • Premium-Yearly3 Days trial$19.991 Year
Show 3 more
  • Premium-Yearly3 Days trial2 variants$29.991 Year
  • Premium-Yearly-Promo1 Year trial$29.991 Year
  • Premium-Yearly-Promo-b1 Year trial$29.991 Year
4 purchases

PolyEcho

Subscriptions3
  • Monthly Subscription$12.991 Month
  • Semi-Annual Subscription$59.996 Months
  • Annual Subscription$99.991 Year
One-time1
  • 5-Time Conversation Credit$2.99

Questions

Is CapWords free?
CapWords is free to download, with in-app purchases available.
Is PolyEcho free?
PolyEcho is free to download, with in-app purchases available.
Do CapWords or PolyEcho have ads?
Neither CapWords nor PolyEcho shows ads.
Which is updated more often, CapWords or PolyEcho?
CapWords ships an update every 5 days, and PolyEcho every 5 days. Most recently, CapWords was updated on October 13, 2026 and PolyEcho on September 30, 2026.

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