# PopStudy vs Einstein Recall

The clearest difference is in-app purchases: Einstein Recall at none against PopStudy's 3. Einstein Recall also leads on iOS requirement (16.6 vs 18.0). PopStudy's advantage is ads (none vs shown) and ratings volume (9 vs 2). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. PopStudy sells 3 one-off in-app purchases. Einstein Recall asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for PopStudy against 5.0 for Einstein Recall. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

PopStudy ships an update fortnightly, Einstein Recall every 2 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | PopStudy | Einstein Recall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (9 ratings)](https://appshunter.io/ios/app/popstudy-language-learning/id1169672977/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/einstein-recall/id6746659104/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 151 MB | 15 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Longtail Studios](https://appshunter.io/developer/305747913) | [Scott Collins](https://appshunter.io/developer/1757164581) |

## What reviewers say

### PopStudy

[App page](https://appshunter.io/ios/app/popstudy-language-learning/id1169672977)

Master any subject with this educational app utilizing a spaced repetition system. Create custom study mixes, engage in personalized sessions, and track your learning progress. Access curated content and study offline on your devices.

**Highlights:** Spaced repetition system, Curated expert content, Customizable study mixes, Personalized daily sessions, Progress tracking, Cross-device syncing, Offline studying

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month Subscription | $7.99 | one-time |
| 3-Month Subscription | $19.99 | one-time |
| 1-Year Subscription | $59.99 | one-time |


### Einstein Recall

[App page](https://appshunter.io/ios/app/einstein-recall/id6746659104)

This app helps you retain more of what you read by using spaced repetition. It automatically schedules reviews and allows you to create memory cards from any content with a single tap. Build lasting knowledge with minimal daily effort.

**Highlights:** Auto-scheduled reviews, Instant memory card creation, AI-powered card generation, Image and screenshot analysis, Organize cards into folders, Streak tracking, Daily reminders

**In-app purchases:** none


## Frequently asked questions

### Is PopStudy free?

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

### Is Einstein Recall free?

Einstein Recall is free to download, with no in-app purchases.

### Which has better reviews, PopStudy or Einstein Recall?

Einstein Recall is rated higher. PopStudy averages 4.9 out of 5 from 9 ratings, while Einstein Recall averages 5.0 from 2 ratings.

### Do PopStudy or Einstein Recall have ads?

Einstein Recall shows ads; PopStudy does not.

### Which is updated more often, PopStudy or Einstein Recall?

PopStudy ships an update fortnightly, and Einstein Recall every 2 weeks. Most recently, PopStudy was updated on October 24, 2026 and Einstein Recall on October 19, 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.*