Comparison

Clozemaster-Vocabulary Builder vs ReadLang WatchLang

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

Head to head
About

Clozemaster-Vocabulary Builder

Master vocabulary in over 50 languages through engaging cloze tests. Learn words in real-world sentence contexts, track progress, and compete globally. Offers multiple learning modes and grammar explanations.

Highlights
  • Cloze tests for vocabulary learning
  • Learn vocabulary in context
  • Over 50 languages available
  • Gamified learning with leaderboards
  • Multiple learning modes (Vocabulary, Listening, Speaking)
  • Grammar explanations
  • Adjustable speaking speed
Features
Read full description

Learn 50+ languages with Clozemaster — the gamified language learning app for A2-C1 learners to master vocabulary by filling in missing words in real-world contexts. [ MASTER LANGUAGES WITH THE CLOZE TEST METHOD ] • Level up your language skills with cloze tests, where you fill in the missing word, challenging you to complete sentences. • Learn vocabulary in context, moving beyond single-word flashcards to complete sentences drawn from real-life scenarios. [ CONTEXTUAL LEARNING FOR REAL-WORLD FLUENCY ] • Experience language as it's used in daily life; learn by completing thousands of sentences in over 50 languages. • Progress through sentences sorted by frequency, focusing first on the words you're most likely to use. [ EXPLORE A WEALTH OF LANGUAGES ] • Play over 50 languages - Afrikaans, Albanian, Amharic, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bengali, Breton, Bulgarian, Cantonese, Catalan, Cornish, Croatian, Czech, Danish, Dutch, English (Ingles), Esperanto, Estonian, Finnish, French, Galician, Georgian, German, Greek, Guarani, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Interlingue, Irish, Italian, Japanese, Kazakh, Korean, Latin, Latvian, Lithuanian, Lojban, Macedonian, Mandarin Chinese, Maori, Nahuatl, Norwegian, Persian Farsi, Polish, Portuguese, Romanian, Russian, Scottish Gaelic, Serbian, Slovak, Slovenian, Spanish (Español), Swahili, Swedish, Tagalog, Thai, Toki Pona, Turkish, Ukrainian, Vietnamese, Welsh, Yiddish. • Each language offers authentic phrases and expressions, enhancing cultural understanding. [ GAMIFY YOUR LEARNING JOURNEY ] • Score points for correct answers, competing on a global leaderboard to make learning engaging and rewarding. • Tackle language challenges to stay motivated, with gamified exercises enhancing your daily learning. [ TAILOR YOUR LANGUAGE EXPERIENCE ] • Adjust the speaking speed to match your comprehension level, catering to learners at all stages. • Visual progress tracking and spaced repetition help you climb the leaderboard and master sentences efficiently. [ DIVERSE LEARNING MODES FOR A HOLISTIC APPROACH ] • Engage with three distinct modes - Vocabulary, Listening, and Speaking - to cater to different aspects of language learning. • Try out the beta feature 'Radio' for a hands-free learning experience, listening to sentences with translations and thoughtful pauses. [ INTERACTIVE LEARNING SUPPORT ] • If you answer incorrectly, tap "Explain" for detailed grammar explanations, aiding your understanding and retention. [ FREE TO PLAY, RICH IN LEARNING ] • Start your language learning journey for free, with essential features accessible to all users. • Choose to upgrade to Clozemaster Pro for a more comprehensive and customized learning experience. [ UNLOCK ADVANCED FEATURES ] • Gain unlimited access to advanced learning features and in-depth exercises with the Pro version. • Create and share custom sentence collections, allowing for a tailored and personalized learning experience. • Access a vast library of grammar challenges and exclusive content, enhancing your linguistic proficiency. Download Clozemaster now and transform your approach to language learning. Whether you are a beginner or an advanced learner, Clozemaster offers a unique and effective way to expand your vocabulary and understand the intricacies of over 50 languages. • Upon confirming your purchase, the charge will be applied to your Apple account. • To provide uninterrupted service, subscriptions renew automatically. Your account will be charged for renewal within 24 hours before the end of the current period. • Manage auto-renewal settings anytime by adjusting your preferences in the App Store. • For a deeper understanding of our policies, please review https://www.clozemaster.com/terms For support or feedback, contact us at hello@clozemaster.com Start your journey to language mastery today!

About

ReadLang WatchLang

Learn languages by translating words and phrases on any webpage or YouTube video with dual subtitles. Practice vocabulary in context and improve listening skills with native pronunciations.

Highlights
  • Translate words and phrases on any webpage
  • YouTube dual subtitle player
  • Learn over 100 languages
  • Practice vocabulary in context
  • Listen to native pronunciations
Features
Read full description

ReadLang WatchLang - Highlight Translate Vocabulary in Browser Learn Languages: Watch YouTube video with dual subtitle player & Read website with translator Watch YouTube video with dual subtitle player & Read website with translator Do you know Learning with Texts (LWT), ReadLang, Lingq, LingoTube, Flowlingo, Redwiki, Tedict, Idiom ... LangBrowser works the same way. Help linguist learn a language fluently while browsing and reading their favourite blogs or news or watch video on Youtube, learn English with ted,.. add context to the vocabulary then practice, and learn in context, listening to youtube video with native pronunciations “FOCUS ON CONTEXT WITH TRANSLATION” - Translate words & phrases on any web page with one tap - YouTube video player with two (duo) subtitle at the same time Learn Languages: Learn English, Spanish, German, Korean, Japanese, 100+ languages... ( Afrikaans, Albanian, Amharic, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bengali, Bosnian, Bulgarian, Catalan, Cebuano, Chinese, Corsican, Croatian, Czech, Danish, Dutch, English, Esperanto, Estonian, Finnish, French, Frisian, Galician, Georgian, German, Greek, Gujarati, Haitian Creole, Hausa, Hawaiian, Hebrew, Hindi, Hmong, Hungarian, Icelandic, Igbo, Indonesian, Irish, Italian, Japanese, Javanese, Kannada, Kazakh, Khmer, Kinyarwanda, Korean, Kurdish, Kyrgyz, Lao, Latvian, Lithuanian, Luxembourgish, Macedonian, Malagasy, Malay, Malayalam, Maltese, Maori, Marathi, Mongolian, Myanmar (Burmese),Nepali, Norwegian, Nyanja (Chichewa), Pashto, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Samoan, Serbian, Sesotho, Shona, Sindhi, Slovak, Slovenian, Somali, Spanish, Sundanese, Swahili, Swedish, Tagalog (Filipino),Tajik, Tamil, Tatar, Telugu, Thai, Turkish, Turkmen, Ukrainian, Urdu, Uyghur/ Uighur, Uzbek, Vietnamese, Welsh, Xhosa, Yiddish, Yoruba, Zulu)

Screenshots

Clozemaster-Vocabulary Builder4 screens
ReadLang WatchLang4 screens

Verdict

The call

The clearest difference is in-app purchases: ReadLang WatchLang at none against Clozemaster-Vocabulary Builder's 10. Clozemaster-Vocabulary Builder's advantage is ads (none vs shown) and rating (4.8 vs 4.4). On price, update cadence, monetization model 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. Clozemaster-Vocabulary Builder sells 8 in-app purchases, starting at $8.99 per month. ReadLang WatchLang asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Clozemaster-Vocabulary Builder holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Clozemaster-Vocabulary Builder has 2.1K ratings behind it against 64, so its average is the more settled of the two. Written reviews point the same way: 83% of Clozemaster-Vocabulary Builder's written reviews are positive against 64% of ReadLang WatchLang's.

UpkeepUpdate frequency

Clozemaster-Vocabulary Builder ships an update every 11 days, ReadLang WatchLang every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Clozemaster-Vocabulary Builder versus ReadLang WatchLang: the parameters behind the verdict, then further details
ParameterClozemaster-Vocabulary BuilderReadLang WatchLang
PriceFreeFree
Rating4.8 (2.1K ratings) — better4.4 (64 ratings)
Positive reviews82.5% of reviews — better64.3% of reviews
Number of ratings2.1K — better64
Update frequencyEvery 11 days — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size83 MB27 MB
Age rating+1217+
DeveloperLanguage Innovation LLCNguyen Hong Phuc

Customer experience

Clozemaster-Vocabulary Builder

All ratings2,067 ratings
Positive95.7%
Neutral1.5%
Negative2.8%
Written reviews544 reviews
Positive82.5%
Neutral6.6%
Negative10.8%

ReadLang WatchLang

All ratings59 ratings
Positive86.4%
Neutral0.0%
Negative13.6%
Written reviews28 reviews
Positive64.3%
Neutral3.6%
Negative32.1%

Bugs and requests

Clozemaster-Vocabulary Builder

Reported bugs

3 issues
  • Crashes and performance issues on older devices
  • Incorrect translations and sentence examples
  • Inconsistencies in language-specific features

Requested features

5 requests
  • Ability to add custom sentences and vocabulary
  • More detailed grammar explanations and lessons
  • Integration with other language learning resources
  • Improved user interface and navigation
  • Offline mode with full functionality

ReadLang WatchLang

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Clozemaster-Vocabulary Builder

Subscriptions8
  • Clozemaster Pro Monthly$8.991 Month
  • Clozemaster Pro Monthly2 variants$12.991 Month
  • Clozemaster Pro Monthly1 Month trial2 variants$12.991 Month
Show 5 more
  • Clozemaster Pro Yearly$69.991 Year
  • Clozemaster Pro Yearly$79.991 Year
  • Clozemaster Pro Annual1 Year trial$79.991 Year
  • Clozemaster Pro Annual7 Days trial$79.991 Year
  • Clozemaster Pro Yearly7 Days trial$79.991 Year
None

ReadLang WatchLang

No in-app purchases

Questions

Is Clozemaster-Vocabulary Builder free?
Clozemaster-Vocabulary Builder is free to download, with in-app purchases available.
Is ReadLang WatchLang free?
ReadLang WatchLang is free to download, with no in-app purchases.
Which has better reviews, Clozemaster-Vocabulary Builder or ReadLang WatchLang?
Clozemaster-Vocabulary Builder is rated higher. Clozemaster-Vocabulary Builder averages 4.8 out of 5 from 2.1K ratings, while ReadLang WatchLang averages 4.4 from 64 ratings.
Do Clozemaster-Vocabulary Builder or ReadLang WatchLang have ads?
ReadLang WatchLang shows ads; Clozemaster-Vocabulary Builder does not.
Which is updated more often, Clozemaster-Vocabulary Builder or ReadLang WatchLang?
Clozemaster-Vocabulary Builder ships an update every 11 days, and ReadLang WatchLang every 2 weeks. Most recently, Clozemaster-Vocabulary Builder was updated on November 2, 2026 and ReadLang WatchLang on November 3, 2026.

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