Comparison

AnkiMobile Flashcards vs Cortex Flex Performance

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

Cortex Flex Performance

This app offers brain training routines developed by neuroscientists to enhance focus, reaction time, and mental resilience for athletes. It includes specialized workouts, mental skills tools, and insights from recruiters to help users perform at their peak.

Highlights
  • Neuropriming Workouts
  • Mental Skills Training
  • Recruitment Insights
  • Game-Day Prep
  • Elite Athlete Community
Features
Read full description

CortexFlex is the daily brain-and-body training system for serious athletes. Developed by neuroscientists and elite performers, its short routines prime your nervous system in the morning, help you recover at night, and build the focus and confidence you need to perform when it counts. Whether you're under the lights on Friday night or grinding through the off-season, CortexFlex turns mental preparation into a daily habit you can see, track and compete on. CortexFlex is free to download and includes the Foundations plan. Some features require a paid Amplify membership; they're listed under AMPLIFY MEMBERSHIP below. YOUR DAILY ROUTINE • AM Primer: morning steps including psychosensorimotor visualization, a fast-twitch activator, sunlight viewing, gratitude and your Identity X-Factor • PM Adaptor: evening steps to regulate your nervous system, lock in what you learned and wind down for better sleep • Foundations includes one AM Primer step and one PM Adaptor step each day PROGRESS YOU CAN SEE • Earn XP for every step and climb seven ranks, from Rookie to Legend • Keep your health bar up and your streak alive • Track your last 10 sessions for every exercise TRAIN WITH YOUR TEAM • Circuit Showdown: a weekly team competition with team and individual rankings, week by week and across the season • Activity feed: see your teammates' completions and announcements from your coach and Cortex • Coach-assigned workouts, plus a workout generator for the days you train on your own LEARN THE WHY • Video Library: technique breakdowns and program walkthroughs • Exercise Library: every Cortex exercise with its demo video • Workout Library: preview Cortex workouts FOR PARENTS • A Family view to follow your athlete's training at a glance AMPLIFY MEMBERSHIP (PAID) • The full AM Primer (five steps) and PM Adaptor (three steps) every day • Daily calibration: a quick check-in that fits each day's training to how your body feels • Nutrition checklist: simple, gamified daily nutrition targets • Your full performance history for every exercise • Two generated workouts per week instead of one Athletes on a coach's team plan may already have Amplify included. Terms of Service: https://cortexflex.org/terms Privacy Policy: https://cortexflex.org/privacy

Screenshots

AnkiMobile Flashcards4 screens
Cortex Flex Performance4 screens

Verdict

The call

The clearest difference is price: Cortex Flex Performance at Free against AnkiMobile Flashcards's $24.99. Cortex Flex Performance also leads on rating (5.0 vs 4.0) and review sentiment (100% vs 59%). AnkiMobile Flashcards's advantage is in-app purchases (none vs 1) and ratings volume (2.4K vs 10). On ads, 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

Cortex Flex Performance is free to download; AnkiMobile Flashcards costs $24.99 up front. Cortex Flex Performance sells 1 in-app purchase, starting at $29.99 per month. AnkiMobile Flashcards asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Cortex Flex Performance holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: AnkiMobile Flashcards has 2.4K ratings behind it against 10, 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 100% of Cortex Flex Performance's.

UpkeepUpdate frequency

AnkiMobile Flashcards ships an update every 6 weeks, Cortex Flex Performance fortnightly. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard8 real differences · 3 level
AnkiMobile Flashcards versus Cortex Flex Performance: the parameters behind the verdict, then further details
ParameterAnkiMobile FlashcardsCortex Flex Performance
Price$24.99Free — better
Rating4.0 (2.4K ratings)5.0 (10 ratings) — better
Positive reviews58.5% of reviews100.0% of reviews — better
Number of ratings2.4K — better10
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#1 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.215.0 — better
Further details — not scored
Size38 MB46 MB
Age rating4+12+
DeveloperAnki Software, LLCCortex Flex 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%

Cortex Flex Performance

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Cortex Flex Performance

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

AnkiMobile Flashcards

No in-app purchases

1 purchases

Cortex Flex Performance

Subscriptions1
  • Cortex Monthly$29.991 Month

Questions

Is AnkiMobile Flashcards free?
AnkiMobile Flashcards costs $24.99, with no in-app purchases.
Is Cortex Flex Performance free?
Cortex Flex Performance is free to download, with in-app purchases available.
Which has better reviews, AnkiMobile Flashcards or Cortex Flex Performance?
Cortex Flex Performance is rated higher. AnkiMobile Flashcards averages 4.0 out of 5 from 2.4K ratings, while Cortex Flex Performance averages 5.0 from 10 ratings.
Do AnkiMobile Flashcards or Cortex Flex Performance have ads?
Neither AnkiMobile Flashcards nor Cortex Flex Performance shows ads.
Which is updated more often, AnkiMobile Flashcards or Cortex Flex Performance?
AnkiMobile Flashcards ships an update every 6 weeks, and Cortex Flex Performance fortnightly. Most recently, AnkiMobile Flashcards was updated on November 8, 2026 and Cortex Flex Performance on October 30, 2026.

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