Comparison

Clozemaster-Vocabulary Builder vs ISYS

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

ISYS

Features
Read full description

Sys, a leading system integrator, introduces a mobile application designed to enhance customer experience and streamline interactions. This platform serves as a direct link between ISys customers and our expert engineers, ensuring efficient communication and faster issue resolution. Potential customers can explore our solutions effortlessly, accessing key information before engaging with our sales team for a seamless onboarding process. Additionally, the app provides a dedicated space for students and tech enthusiasts to access on-demand recorded sessions covering the latest technology announcements and enablement programs. Enterprises can also request customized workshops through the application to assess project feasibility and explore how ISys can support their implementation needs. Furthermore, businesses and individuals can register for ISys events directly through the app, ensuring they stay updated with the latest industry trends and innovations. With ISys, you gain more than just technology—you gain a smarter, more connected digital experience tailored to your needs

Screenshots

Clozemaster-Vocabulary Builder4 screens
ISYS3 screens

Verdict

The call

The clearest difference is in-app purchases: ISYS at none against Clozemaster-Vocabulary Builder's 11. ISYS also leads on iOS requirement (13.0 vs 16.4). Clozemaster-Vocabulary Builder's advantage is update cadence (every 11 days vs every 8 months). On price, 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. Clozemaster-Vocabulary Builder sells 8 in-app purchases, starting at $8.99 per month. ISYS asks for nothing beyond the download.

UpkeepUpdate frequency

Clozemaster-Vocabulary Builder ships an update every 11 days, ISYS every 8 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Clozemaster-Vocabulary Builder versus ISYS: the parameters behind the verdict, then further details
ParameterClozemaster-Vocabulary BuilderISYS
PriceFreeFree
Rating4.8 (2.1K ratings) — better—
Positive reviews82.5% of reviews—
Number of ratings2.1K — better—
Update frequencyEvery 11 days — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.413.0 — better
Further details — not scored
Size83 MB46 MB
Age rating+124+
DeveloperLanguage Innovation LLCYoussef Alrakkib

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

ISYS

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 trial2 variants$79.991 Year
  • Clozemaster Pro Annual7 Days trial$79.991 Year
  • Clozemaster Pro Yearly7 Days trial$79.991 Year
None

ISYS

No in-app purchases

Questions

Is Clozemaster-Vocabulary Builder free?
Clozemaster-Vocabulary Builder is free to download, with in-app purchases available.
Is ISYS free?
ISYS is free to download, with no in-app purchases.
Do Clozemaster-Vocabulary Builder or ISYS have ads?
Neither Clozemaster-Vocabulary Builder nor ISYS shows ads.
Which is updated more often, Clozemaster-Vocabulary Builder or ISYS?
Clozemaster-Vocabulary Builder ships an update every 11 days, and ISYS every 8 months. Most recently, Clozemaster-Vocabulary Builder was updated on October 26, 2026 and ISYS on October 25, 2026.

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