# SuperMemo vs Extreme Concentration Trainer

The clearest difference is price: SuperMemo at Free against Extreme Concentration Trainer's $2.99. SuperMemo also leads on ratings volume (132 vs 1) and iOS requirement (15.0 vs 17.6). Extreme Concentration Trainer's advantage is rating (5.0 vs 4.2) and in-app purchases (none vs 10). On update cadence, ads and device support there is nothing between them.

SuperMemo is free to download; Extreme Concentration Trainer costs $2.99 up front. SuperMemo sells 10 in-app purchases, starting at $9.99 per month. Extreme Concentration Trainer asks for nothing beyond the download.

Extreme Concentration Trainer holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: SuperMemo has 132 ratings behind it against 1, so its average is the more settled of the two.

SuperMemo ships an update every 4 weeks, Extreme Concentration Trainer fortnightly. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | SuperMemo | Extreme Concentration Trainer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.2 (132 ratings)](https://appshunter.io/ios/app/supermemo-effective-learning/id982498980/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/extreme-concentration-trainer/id6810893676/reviews)** |
| Number of ratings | **132** | 1 |
| Positive reviews | 31.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 63 MB | 9 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SuperMemo World](https://appshunter.io/developer/326593746) | [Petro Benedyk](https://appshunter.io/developer/6810893678) |

## What reviewers say

### SuperMemo

[App page](https://appshunter.io/ios/app/supermemo-effective-learning/id982498980)

Master new languages and subjects with AI-powered spaced repetition. Practice conversations, get instant translations, and access a vast library of courses. Learn effectively, even offline, with intelligent review schedules.

**Highlights:** Spaced repetition algorithm, AI-powered conversation practice, AI voice translation, Extensive course catalog, Offline learning option, Customizable flashcards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SuperMemo.com Premium | $9.99 | per month |
| Premium Subscription 12 months | $99.99 | per year |
| German Grammar Repertory | $29.90 | one-time |
| Portuguese: Fast Track | $39.90 | one-time |
| Biznesowy niemiecki.Słownictwo | $39.90 | one-time |
| Romanian: Fast Track | $39.99 | one-time |
| Italian Megaset 10-in-1 | $149.99 | one-time |
| Spanish Megaset 15-in-1 | $219.99 | one-time |
| French Megaset 17-in-1 | $229.99 | one-time |
| German Megaset 18-in-1 | $249.99 | one-time |

**What reviewers like**

- 👍 Excellent for long-term retention
- 👍 Highly recommended for language learning
- 👍 Offline mode appreciated (when available)
- 👍 Mature learning database/tool
- 👍 Content is top-notch

**What reviewers complain about**

- 🐛 App frequently crashes or doesn't start
- 🐛 No way to test without trial/signup
- 🐛 Cannot connect to App Store
- 🐛 Purchased courses disappeared after update
- 🐛 Website not working correctly

**Reported bugs**

- App doesn't start on iPhone 13 Pro
- Purchased courses disappeared after update
- Website not working correctly
- No longer works offline
- Slower online performance

**Requested features**

- Option to switch back to old font
- Fix search to allow searching for accented characters
- Improve TTS to respect punctuation and spacing
- Improve course editor to display cards with lots of text
- Add Apple Sign In


### Extreme Concentration Trainer

[App page](https://appshunter.io/ios/app/extreme-concentration-trainer/id6810893676)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SuperMemo free?

SuperMemo is free to download, with in-app purchases available.

### Is Extreme Concentration Trainer free?

Extreme Concentration Trainer costs $2.99, with no in-app purchases.

### Which has better reviews, SuperMemo or Extreme Concentration Trainer?

Extreme Concentration Trainer is rated higher. SuperMemo averages 4.2 out of 5 from 132 ratings, while Extreme Concentration Trainer averages 5.0 from 1 ratings.

### Do SuperMemo or Extreme Concentration Trainer have ads?

Neither SuperMemo nor Extreme Concentration Trainer shows ads.

### Which is updated more often, SuperMemo or Extreme Concentration Trainer?

SuperMemo ships an update every 4 weeks, and Extreme Concentration Trainer fortnightly. Most recently, SuperMemo was updated on November 11, 2026 and Extreme Concentration Trainer on November 10, 2026.

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