# 스마트 학생증 vs 문득

The clearest difference is in-app purchases: 스마트 학생증 at none against 문득's 2. 스마트 학생증 also leads on iOS requirement (12.0 vs 17.2). 문득's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. 문득 sells 2 in-app purchases, starting at $1.99 per month. 스마트 학생증 asks for nothing beyond the download.

스마트 학생증 ships an update every 2 months, 문득 every 3 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 스마트 학생증 | 문득 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 37 MB |
| Requires iOS | **12.0** | 17.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Sunghyun system co., ltd.](https://appshunter.io/developer/1502802776) | [JIHWAN YEOM](https://appshunter.io/developer/6805761199) |

## What reviewers say

### 스마트 학생증

[App page](https://appshunter.io/ios/app/id1502802777)

**Features:** macOS Compatibility

**In-app purchases:** none


### 문득

[App page](https://appshunter.io/ios/app/ai-pdf/id6805761197)

This app generates AI-powered quizzes from your PDF, PPT, or Notion notes. Review material directly on your phone's lock screen, with spaced repetition for optimal recall. It automatically creates questions, answers, and options, saving you time on flashcard creation.

**Highlights:** AI quiz generation from PDF, PPT, Notion, Lock screen review cards, Spaced repetition for optimal recall, Automatic question, answer, and option creation, Mock exam mode, Customizable review intervals

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 문득 베이직 | $1.99 | per month |
| 크레딧 10개 | $1.99 | one-time |


## Frequently asked questions

### Is 스마트 학생증 free?

스마트 학생증 is free to download, with no in-app purchases.

### Is 문득 free?

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

### Do 스마트 학생증 or 문득 have ads?

Neither 스마트 학생증 nor 문득 shows ads.

### Which is updated more often, 스마트 학생증 or 문득?

스마트 학생증 ships an update every 2 months, and 문득 every 3 days. Most recently, 스마트 학생증 was updated on October 6, 2026 and 문득 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.*