Comparison

Open eClass Mobile vs Cogni

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

Head to head
About

Open eClass Mobile

Access your Open eClass courses and stay updated with the official mobile application. This app provides an alternative way to interact with your educational content, designed to complement the web experience.

Highlights
  • Access Open eClass courses
  • Stay updated on course content
  • Alternative to web-app access
  • Requires active user account
  • Works with enabled Open eClass sites
Features
Read full description

Redesigned official Open eClass Mobile app! This application requires an active user account and works only with Open eClass sites that have enabled the mobile API. Please contact your Open eClass administrator if you encounter connection problems. It works best with Open eClass versions 4.4 or later This new mobile-app does not try to be everything that the web-app is but offers an alternative means for accessing courses and stay up-to-date. We’d really appreciate your feedback!

About

Cogni

Create and study flashcards to master new materials efficiently. Utilize an enhanced spaced repetition algorithm to optimize study sessions for exams, languages, or complex subjects. Millions trust this method to achieve their learning goals.

Highlights
  • Create and review custom flashcards
  • Spaced repetition algorithm
  • Pre-made deck library
  • AI-enhanced recall
  • Progress tracking
  • Offline access
Read full description

Cogni empowers you to master new materials effortlessly by creating and studying flashcards. Built on an enhanced spaced repetition algorithm, the app optimizes your study sessions, ensuring you get the most out of your learning. Whether preparing for exams, studying languages, or mastering complex subjects, millions trust flashcards to achieve their goals. Start your journey to mastery today—no limits, no boundaries, just learning! - Languages - Medicine (MCAT, USMLE & More) - Anatomy & Physiology - Exam preparation (SAT, GRE & More) - Math - Law - Geography - Computing - And many more! Key Benefits: - Easily create and review flashcards tailored to your learning needs. - Customize your cards with colors, lists, and more to fit your style. - Access a massive library of pre-made decks to jumpstart your learning. - Review lecture materials and prep for exams with powerful spaced repetition. Thousands of students boost their grades with this science-backed approach. - AI-enhanced spaced repetition (SRS) for optimal recall. - Flexible study interface with swipe and tap actions for efficient learning. - Detailed statistics and progress tracking to monitor your success. - Offline access to study with media-supported flashcards. Get started with Cogni today and take control of your learning journey! Terms of Use: https://cogni.cards/terms/ Privacy Policy: https://cogni.cards/privacy/

Screenshots

Open eClass Mobile4 screens
Cogni4 screens

Verdict

The call

The clearest difference is in-app purchases: Open eClass Mobile at none against Cogni's 9. Cogni's advantage is review sentiment (36% vs 2%) and update cadence (every 10 days vs every 3 months). On price, 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

Both are free to download. Cogni sells 9 in-app purchases, starting at $4.99 per month. Open eClass Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

Open eClass Mobile ships an update every 3 months, Cogni every 10 days. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 6 level
Open eClass Mobile versus Cogni: the parameters behind the verdict, then further details
ParameterOpen eClass MobileCogni
PriceFreeFree
Rating—4.7 (1.7K ratings) — better
Positive reviews2.3% of reviews35.7% of reviews — better
Number of ratings—1.7K — better
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.3 — better16.4
Further details — not scored
Size33 MB62 MB
Age rating17+4+
DeveloperGreek Universities NetworkCOGNIFLY LTD

Customer experience

Open eClass Mobile

Written reviews44 reviews
Positive2.3%
Neutral4.5%
Negative93.2%

Cogni

All ratings1,683 ratings
Positive93.0%
Neutral2.7%
Negative4.3%
Written reviews199 reviews
Positive35.7%
Neutral17.6%
Negative46.7%

Bugs and requests

Open eClass Mobile

Not enough reviews yet to summarise bugs or requests.

Cogni

Reported bugs

2 issues
  • App no longer available after paying for annual subscription
  • Occasional crashes

Requested features

4 requests
  • Integrate ChatGPT or Claude for automatic card creation
  • Add sub-decks for larger decks that need more review
  • Improve algorithm for hard/again ratings to better target struggling cards
  • Add subsections for decks to study different sections separately

In-app purchases

None

Open eClass Mobile

No in-app purchases

9 purchases

Cogni

Subscriptions7
  • Premium Monthly$4.991 Month
  • Premium Monthly$7.991 Month
  • Premium Monthly$14.991 Month
Show 4 more
  • Premium Annual$19.991 Year
  • Premium Annual$24.991 Year
  • Premium Annual$29.991 Year
  • Premium Annual$49.991 Year
One-time2
  • Lifetime Premium$69.99
  • Premium Lifetime$99.99

Questions

Is Open eClass Mobile free?
Open eClass Mobile is free to download, with no in-app purchases.
Is Cogni free?
Cogni is free to download, with in-app purchases available.
Do Open eClass Mobile or Cogni have ads?
Neither Open eClass Mobile nor Cogni shows ads.
Which is updated more often, Open eClass Mobile or Cogni?
Open eClass Mobile ships an update every 3 months, and Cogni every 10 days. Most recently, Open eClass Mobile was updated on October 14, 2026 and Cogni on October 20, 2026.

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