Comparison

DuoCards vs Guru

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

Guru

This app helps students import existing flashcard decks, review them using an AI-powered spaced repetition system, and even generate new cards from PDFs and notes. It includes a study lock feature to minimize distractions during review sessions.

Highlights
  • Import existing flashcard decks
  • AI-powered spaced repetition (FSRS)
  • Generate flashcards from PDFs and notes
  • Study Lock to block distracting apps
  • Controller support for reviews
  • Organized deck management
Features
Read full description

Guru imports your Anki decks (.apkg and .colpkg) with cards, media, sub-decks and scheduling state intact, then reviews them on iPhone and iPad with the FSRS scheduler, online or offline. Open a deck straight from Files, AirDrop, Safari downloads or the share sheet. Importing and daily review are free for up to 5 decks. Pro unlocks card editing, cross-device sync, Study Lock and unlimited decks: US$4.99/month after a 3-day free trial, US$39.99/year, or US$24.99 once for Lifetime (includes 5,000 AI credits). Requires iOS 17 or later. ■ Import your decks ・.apkg and .colpkg packages, including large shared decks with tens of thousands of cards ・Cards, cloze deletions, images, audio, sub-decks and scheduling state come through ・Browse the deck tree before you start reviewing ■ Review with FSRS ・Study cards when they are due, with Again, Hard, Good and Easy ratings ・One card per note per day, so cloze siblings don't stack up ・Cram Mode before exams without rebuilding your deck ■ Turn material into cards ・Create draft cards from PDFs, notes and lectures with AI credits ・Review and edit generated cards before studying ・Image occlusion cards for diagrams and anatomy ■ Stay focused ・Study Lock (optional) shields selected distracting apps until today's review is done ・Review with touch, gestures, or a paired game controller ・Built for fast daily sessions on iPhone and iPad ■ Export and sync ・Every deck exports back to a standard .apkg ・Pro syncs decks, cards and review progress with the GuruOwl web app ■ Pro access Choose a monthly or yearly subscription, or the one-time Lifetime unlock. AI card generation uses credits. Subscriptions can be cancelled any time in App Store settings. Guru is an independent app and is not affiliated with Anki, AnkiMobile or AnkiWeb. ■ Legal Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://guruowl.com/app/privacy

Screenshots

DuoCards4 screens
Guru4 screens

Verdict

The call

The clearest difference is ads: Guru at none against DuoCards's shown. Guru also leads on update cadence (every 3 days vs monthly). DuoCards's advantage is ratings volume (1.4K vs 3) and iOS requirement (13.0 vs 17.0). On price, rating, in-app purchases and monetization model 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 and Guru sells 5 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for DuoCards against 4.7 for Guru. That said, the two scores are not equally well evidenced: DuoCards has 1.4K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

DuoCards ships an update monthly, Guru every 3 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
DuoCards versus Guru: the parameters behind the verdict, then further details
ParameterDuoCardsGuru
PriceFreeFree
Rating4.7 (1.4K ratings) — better4.7 (3 ratings)
Positive reviews63.1% of reviews—
Number of ratings1.4K — better3
Update frequencyMonthlyEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size19 MB113 MB
Age rating4+9+
DeveloperDuoCards s.r.o剑 肖

Customer experience

DuoCards

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

Guru

All ratings3 ratings
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

Guru

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
5 purchases

Guru

Subscriptions3
  • Flashcard Guru Pro Weekly3 Days trial$2.997 Days
  • Flashcard Guru Pro Monthly3 Days trial$4.991 Month
  • Flashcard Guru Pro Yearly$39.991 Year
One-time2
  • 500 AI Credits$4.99
  • Lifetime Pro$24.99

Questions

Is DuoCards free?
DuoCards is free to download, with in-app purchases available.
Is Guru free?
Guru is free to download, with in-app purchases available.
Which has better reviews, DuoCards or Guru?
DuoCards is rated higher. DuoCards averages 4.7 out of 5 from 1.4K ratings, while Guru averages 4.7 from 3 ratings.
Do DuoCards or Guru have ads?
DuoCards shows ads; Guru does not.
Which is updated more often, DuoCards or Guru?
DuoCards ships an update monthly, and Guru every 3 days. Most recently, DuoCards was updated on October 27, 2026 and Guru on October 25, 2026.

Other comparisons