Comparison

DuoCards vs Onset

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

Head to head
About

DuoCards

Master a new language with interactive flashcards and video courses. This app helps you build vocabulary, guess words, and track your progress across over 50 languages. Learn effectively through spaced repetition and integrated translation tools.

Highlights
  • Flashcard learning with spaced repetition
  • Video language courses with interactive subtitles
  • Integrated translator for over 50 languages
  • Vocabulary builder and progress tracker
  • Guess words and phrases to sharpen skills
  • Read foreign language articles
Features
Read full description

Build vocabulary from the real content you already enjoy. DuoCards helps you save new words from videos, articles, shared decks, and your own notes, then remember them with smart flashcards and spaced repetition. Why learners choose DuoCards: - Save words and phrases from videos, subtitles, and articles - Practice with an AI tutor for real-life conversations - Improve pronunciation with instant feedback - Review vocabulary with flashcards that adapt to your progress - Learn English, Spanish, French, German, Japanese, Korean, and 50+ languages - Use ready-made courses, public decks, or your own personal word lists Learn in a simple loop: 1. Discover useful words in context 2. Save them to your personal deck 3. Review, speak, listen, and remember Whether you are learning for travel, school, work, or everyday conversations, DuoCards gives you a flexible way to build vocabulary and keep it in memory. Download DuoCards and start building your language habit today. Terms of use: https://www.duocards.com/termsofuse.html Privacy policy: https://www.duocards.com/privacypolicy.html

About

Onset

This platform helps users easily learn English vocabulary and expand their word knowledge through engaging games and competitive challenges. Earn in-game currency with victories to unlock specialized grammar courses.

Highlights
  • Learn English vocabulary
  • Expand word knowledge
  • Engaging games
  • Competitive challenges
  • Earn in-game currency
  • Unlock grammar courses
Features
Read full description

Onset - bu oson til o‘rganish platformasi. Bugungi shiddatli davrda til o‘rganish, ayniqsa, 1,5 mlrd insonlarning asosiy muloqot vositasi hisoblangan ingliz tilida so‘zlashuv immunitetini hosil qilish har bir o‘zbekistonlik uchun juda muhim. Onset Sizga ingliz tilidagi so‘zlarni oson o‘zlashtirish, lug‘at boyligingizni oshirish va bularning barchasini sifatli bajarishingizda eng yaxshi yordamchi bo‘la oladi. So‘zlarni o‘yinlar orqali, real odamlar bilan bellashuv jarayonida o‘rganib borasiz, har bir g‘alaba esa Sizga tangalar taqdim etadi. Ma'lum miqdorda yig‘ilgan tangalar bilan ingliz tilining grammatikasini o‘rgatuvchi maxsus o‘quv kurslariga to‘lov qilishingiz mumkin bo‘ladi. Adrenalin, hayajon va barcha ingliz tilidagi so‘zlar - hammasi Onset'da.

Screenshots

DuoCards4 screens
Onset4 screens

Verdict

The call

DuoCards and Onset both sit at 4.7 stars, but that hides the real split: 100% of Onset's written reviews are positive against 63% of DuoCards's. Onset also leads on in-app purchases (none vs 11) and ads (none vs shown). DuoCards's advantage is ratings volume (1.3K vs 21). On price, rating, update cadence 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. DuoCards sells 10 in-app purchases, starting at $19.99 per month. Onset asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for DuoCards against 4.8 for Onset. That said, the two scores are not equally well evidenced: DuoCards has 1.3K ratings behind it against 21, so its average is the more settled of the two. Written reviews are what separate them: 63% of DuoCards's written reviews are positive against 100% of Onset's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
DuoCards versus Onset: the parameters behind the verdict, then further details
ParameterDuoCardsOnset
PriceFreeFree
Rating4.7 (1.3K ratings)4.8 (21 ratings) — better
Positive reviews63.1% of reviews100.0% of reviews — better
Number of ratings1.3K — better21
Update frequencyMonthlyMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.013.0
Further details — not scored
Size19 MB53 MB
Age rating4+12+
DeveloperDuoCards s.r.oCompass X Ltd

Customer experience

DuoCards

All ratings1,340 ratings
Positive93.4%
Neutral2.5%
Negative4.2%
Written reviews594 reviews
Positive63.1%
Neutral10.4%
Negative26.4%

Onset

All ratings21 ratings
Positive95.2%
Neutral4.8%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

DuoCards

Reported bugs

4 issues
  • App freezes and crashes
  • Issues with logging in and accessing content
  • Inconsistent behavior when adding new words
  • Problems with video playback and subtitles

Requested features

4 requests
  • Offline mode
  • More customization options
  • Improved spaced repetition system
  • Better integration with other language learning tools

Onset

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

DuoCards

Subscriptions10
  • DuoCards Premium2 variants$19.991 Month
  • DuoCards Plus$33.003 Months
  • DuoCards Premium$34.993 Months
Show 7 more
  • DuoCards Premium$49.991 Year
  • DuoCards Premium7 Days trial$64.901 Year
  • DuoCards Premium7 Days trial$67.991 Year
  • DuoCards Premium1 Year trial$107.991 Year
  • DuoCards Premium7 Days trial$109.001 Year
  • DuoCards Premium7 Days trial$113.991 Year
  • DuoCards Premium1 Year trial$162.991 Year
None

Onset

No in-app purchases

Questions

Is DuoCards free?
DuoCards is free to download, with in-app purchases available.
Is Onset free?
Onset is free to download, with no in-app purchases.
Which has better reviews, DuoCards or Onset?
Onset is rated higher. DuoCards averages 4.7 out of 5 from 1.3K ratings, while Onset averages 4.8 from 21 ratings.
Do DuoCards or Onset have ads?
DuoCards shows ads; Onset does not.
Which is updated more often, DuoCards or Onset?
DuoCards ships an update monthly, and Onset monthly. Most recently, DuoCards was updated on October 15, 2026 and Onset on October 7, 2026.

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