# Open eClass Mobile vs Cogni

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.

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.

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.

## The numbers

| Metric | Open eClass Mobile | Cogni |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (1.7K ratings)](https://appshunter.io/ios/app/cogni-ai-flashcards-and-notes/id6737768905/reviews)** |
| Number of ratings | — | **1.7K** |
| Positive reviews | 2.3% of reviews | **35.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 33 MB | 62 MB |
| Requires iOS | **15.3** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Greek Universities Network](https://appshunter.io/developer/796936705) | [COGNIFLY LTD](https://appshunter.io/developer/1808620132) |

## What reviewers say

### Open eClass Mobile

[App page](https://appshunter.io/ios/app/open-eclass-mobile/id1398319489)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cogni

[App page](https://appshunter.io/ios/app/cogni-ai-flashcards-and-notes/id6737768905)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Monthly | $7.99 | per month |
| Premium Monthly | $14.99 | per month |
| Premium Annual | $19.99 | per year |
| Premium Annual | $24.99 | per year |
| Premium Annual | $29.99 | per year |
| Premium Annual | $49.99 | per year |
| Lifetime Premium | $69.99 | one-time |
| Premium Lifetime | $99.99 | one-time |

**What reviewers like**

- 👍 Great app for memorizing and growing recall skills
- 🚀 Lifesaver for challenging, memory-heavy subjects like med school
- 👍 Sleek and user-friendly interface, no distractions

**What reviewers complain about**

- 🐛 Locked up referring to an upgrade page, couldn't continue using the app
- 🐛 Not easy to use, inaccurate for Spanish language
- 🐛 Desktop flashcards deck won't sync with mobile, forcing duplicate work

**Reported bugs**

- App no longer available after paying for annual subscription
- Occasional crashes

**Requested features**

- 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


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*