# ZapCards vs StudyOS

The clearest difference is rating: StudyOS at 4.9 against ZapCards's 4.3. StudyOS also leads on ratings volume (91 vs 3) and update cadence (every 9 days vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ZapCards sells 3 in-app purchases, starting at $1.99 per month and StudyOS sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

StudyOS holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: StudyOS has 91 ratings behind it against 3, so its average is the more settled of the two.

ZapCards ships an update monthly, StudyOS every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZapCards | StudyOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/zapcards-active-recall/id6743127955/reviews) | **[4.9 (91 ratings)](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382/reviews)** |
| Number of ratings | 3 | **91** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Freemium | Freemium |
| Size | 51 MB | 118 MB |
| Requires iOS | **17.0** | 17.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [绩松 梁](https://appshunter.io/developer/1769142019) | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) |

## What reviewers say

### ZapCards

[App page](https://appshunter.io/ios/app/zapcards-active-recall/id6743127955)

This app uses scientifically proven memory techniques and the SuperMemo SM-2 algorithm to help you learn efficiently. It employs active recall and allows you to add rich media to your flashcards, building interconnected knowledge. Track your progress and sync seamlessly across Apple devices with a distraction-free interface.

**Highlights:** SuperMemo SM-2 algorithm, Active recall learning, Multimedia flashcard notes, Progress tracking, iCloud sync, Distraction-free interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |
| Full Version | $14.99 | one-time |


### StudyOS

[App page](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382)

Transform your study materials into interactive flashcards, summaries, and quizzes with AI. This app efficiently prepares you for exams and helps you master concepts on the go, making learning faster and more engaging.

**Highlights:** AI-generated flashcards, Automated summaries, Personalized quizzes, Material upload (notes, PDFs, images), Spaced repetition techniques, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $12.99 | per month |
| Premium Access | $12.99 | per month |
| Premium Access | $69.99 | per year |


## Frequently asked questions

### Is ZapCards free?

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

### Is StudyOS free?

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

### Which has better reviews, ZapCards or StudyOS?

StudyOS is rated higher. ZapCards averages 4.3 out of 5 from 3 ratings, while StudyOS averages 4.9 from 91 ratings.

### Do ZapCards or StudyOS have ads?

Neither ZapCards nor StudyOS shows ads.

### Which is updated more often, ZapCards or StudyOS?

ZapCards ships an update monthly, and StudyOS every 9 days. Most recently, ZapCards was updated on October 25, 2026 and StudyOS on October 24, 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.*