Comparison

AnkiMobile Flashcards vs Eureka Viewer

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

Head to head
About

AnkiMobile Flashcards

This flashcard app offers a powerful spaced repetition system for efficient learning and memorization. Sync your decks across all your devices, including desktop and web, for seamless study anywhere. Supports large collections, custom card creation, and detailed progress tracking.

Highlights
  • Spaced repetition scheduling (SM-2 and FSRS)
  • Free sync with AnkiWeb across devices
  • Support for large card collections (100,000+)
  • Offline study with local media storage
  • Flexible interface for efficient study
  • Detailed progress graphs and statistics
  • MathJax and LaTeX rendering
Features
Read full description

Your decks, wherever you go! AnkiMobile is the official Anki app for iPhone and iPad, the flashcard app that more than 15 million learners worldwide have loved and trusted for over 20 years, made by the team behind Anki and AnkiWeb. Your purchase directly supports the open-source project that keeps Anki desktop free for everyone. Sync is included at no extra cost: no subscription, no sync fees. What you get: - Free sync with AnkiWeb. Keep your decks and study progress in sync across iPhone, iPad, Mac, Windows, Linux, and the web. Add cards on your computer, study them on your phone. - The same SM-2 and FSRS scheduling as desktop Anki, so you review material right as you're about to forget it. - A flexible interface designed for smooth and efficient study. - Detailed graphs and statistics about your progress. - Support for large collections, including 100,000+ cards. - Offline study. Media (images and audio) is stored on your device. - Powerful search for building filtered decks, e.g. "tagged high priority, answered in the last ten days, and not containing these words". - MathJax equations and LaTeX rendering. - Apple Pencil support for adding hand-drawn images to cards. Good to know: AnkiMobile works alongside the desktop version of Anki. Some tasks might require the desktop version, and add-ons are not supported on mobile yet. Sync is optional. You can also import and export data over USB or AirDrop. Buy once and use AnkiMobile on all your devices with the same Apple ID. Family Sharing is also supported. Educational institutions can find bulk discounts information through Apple's Volume Purchase Program. Need help? The manual and support resources are at https://docs.ankiweb.net/ankimobile/support. If you have questions or want to report an issue, contact us through our support site.

About

Eureka Viewer

This eReader allows secure access and annotation of digitally protected PDF documents from specific platforms. It offers tools like highlighting, underlining, and note-taking, with an automatic index for easy reference and cross-device syncing. Optimized for statistical and mathematical content, it's ideal for intensive study.

Highlights
  • Secure access to protected PDFs
  • Highlighting and underlining
  • Margin notes and custom page notes
  • Automatic annotation index
  • Cross-device syncing
  • Optimized for statistical/mathematical content
  • Offline access (limited terms)
Features
Read full description

Eureka! is an eReader designed exclusively for reading and annotating digitally protected pdf documents, and viewing videos distributed through ArchiMedia Advantage, Inc. platforms. The Eureka! eReader provides fast and secure access to your digitally protected pdf materials distributed via ArchiMedia Advantage, Inc. platforms. To ensure the application enhances the use of your licensed materials, it is optimized to display statistical and mathematical content . For use online or offline (limited terms), Eureka! simulates traditional study techniques like highlighting, underlining, margin notes (comments) and provides the option to enter your own notes (by page). All of these tools are automatically captured in an annotation index for easy reference and sync across compatible devices! Document printing, if authorized, is available exclusively through use of a Eureka! desktop offline player; printing from web browsers or mobile devices is not available. With quick load times, responsive page navigation, and viewing options such as zoom, single page, and side by side, Eureka! is ideal for intensive study and will quickly become your preferred tool for consuming digitally published content at home and on-the-go.

Screenshots

AnkiMobile Flashcards4 screens
Eureka Viewer4 screens

Verdict

The call

The clearest difference is review sentiment: AnkiMobile Flashcards at 59% against Eureka Viewer's 0%. AnkiMobile Flashcards also leads on rating (4.0 vs 2.5) and ratings volume (2.4K vs 11). Eureka Viewer's advantage is price (Free vs $24.99). On ads, in-app purchases, device support and iOS requirement 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

Eureka Viewer is free to download; AnkiMobile Flashcards costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AnkiMobile Flashcards holds the better App Store score, 4.0 against 2.5. That said, the two scores are not equally well evidenced: AnkiMobile Flashcards has 2.4K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 59% of AnkiMobile Flashcards's written reviews are positive against 0% of Eureka Viewer's.

UpkeepUpdate frequency

AnkiMobile Flashcards ships an update every 6 weeks, Eureka Viewer every 3 months. The most recent releases landed on November 9, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 4 level
AnkiMobile Flashcards versus Eureka Viewer: the parameters behind the verdict, then further details
ParameterAnkiMobile FlashcardsEureka Viewer
Price$24.99Free — better
Rating4.0 (2.4K ratings) — better2.5 (11 ratings)
Positive reviews58.5% of reviews — better0.0% of reviews
Number of ratings2.4K — better11
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#1 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.215.0 — better
Further details — not scored
Size38 MB261 MB
Age rating4+4+
DeveloperAnki Software, LLCArchiMedia Advantage Inc.

Customer experience

AnkiMobile Flashcards

All ratings2,375 ratings
Positive73.8%
Neutral5.1%
Negative21.1%
Written reviews1,589 reviews
Positive58.5%
Neutral12.9%
Negative28.6%

Eureka Viewer

All ratings11 ratings
Positive27.3%
Neutral18.2%
Negative54.5%
Written reviews10 reviews
Positive0.0%
Neutral20.0%
Negative80.0%

Bugs and requests

AnkiMobile Flashcards

Reported bugs

5 issues
  • Cards disappearing after updates
  • Inconsistent behavior when switching between apps
  • Inability to delete decks on mobile
  • Sync issues causing data loss
  • Compatibility problems with older iOS versions

Requested features

6 requests
  • Add dark mode option
  • Improve card browsing and management features
  • Integrate with Apple Pencil for better note-taking
  • Add support for more file formats (e.g., Opus audio)
  • Enhance mobile-specific features and UI
Show 1 more
  • Provide better onboarding and tutorials

Eureka Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

AnkiMobile Flashcards

No in-app purchases

None

Eureka Viewer

No in-app purchases

Questions

Is AnkiMobile Flashcards free?
AnkiMobile Flashcards costs $24.99, with no in-app purchases.
Is Eureka Viewer free?
Eureka Viewer is free to download, with no in-app purchases.
Which has better reviews, AnkiMobile Flashcards or Eureka Viewer?
AnkiMobile Flashcards is rated higher. AnkiMobile Flashcards averages 4.0 out of 5 from 2.4K ratings, while Eureka Viewer averages 2.5 from 11 ratings.
Do AnkiMobile Flashcards or Eureka Viewer have ads?
Neither AnkiMobile Flashcards nor Eureka Viewer shows ads.
Which is updated more often, AnkiMobile Flashcards or Eureka Viewer?
AnkiMobile Flashcards ships an update every 6 weeks, and Eureka Viewer every 3 months. Most recently, AnkiMobile Flashcards was updated on November 9, 2026 and Eureka Viewer on November 3, 2026.

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