# 사락 vs 해피캠퍼스

The clearest difference is review sentiment: 사락 at 45% against 해피캠퍼스's 0%. 사락 also leads on in-app purchases (none vs 4) and ads (none vs shown). 해피캠퍼스's advantage is update cadence (every 3 weeks vs every 2 months). On price and iOS requirement there is nothing between them.

Both are free to download. 해피캠퍼스 sells 4 one-off in-app purchases. 사락 asks for nothing beyond the download.

사락 ships an update every 2 months, 해피캠퍼스 every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 사락 | 해피캠퍼스 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/24/id6447539223/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **45.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 69 MB | 48 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [예스24](https://appshunter.io/developer/360051539) | [Agentsoft Co., Ltd.](https://appshunter.io/developer/1078532533) |

## What reviewers say

### 사락

[App page](https://appshunter.io/ios/app/24/id6447539223)

Create a personalized reading journal, connect with fellow book lovers, and discover new titles. Track your reading progress, share reviews, and join or create book clubs. Earn rewards for your engagement.

**Highlights:** Personalized reading journal, Book review sharing, Book club participation and creation, Reading progress tracking, Content recommendations, Photo-based note-taking

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

**In-app purchases:** none


### 해피캠퍼스

[App page](https://appshunter.io/ios/app/id6472879125)

Access a vast library of academic papers, resumes, and study materials for various educational levels. Share your own work and earn money through a peer-to-peer marketplace. Available on both PC and mobile devices.

**Highlights:** Access academic papers and study materials, Upload and sell your own documents, Earn money from shared content, Browse popular topics and case studies, View and download original documents, Cross-platform PC and mobile access

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10,000코인 충전 | $9.99 | one-time |
| 20,000코인 충전 | $19.99 | one-time |
| 30,000코인 충전 | $29.99 | one-time |
| 50,000코인 충전 | $49.99 | one-time |


## Frequently asked questions

### Is 사락 free?

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

### Is 해피캠퍼스 free?

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

### Do 사락 or 해피캠퍼스 have ads?

해피캠퍼스 shows ads; 사락 does not.

### Which is updated more often, 사락 or 해피캠퍼스?

사락 ships an update every 2 months, and 해피캠퍼스 every 3 weeks. Most recently, 사락 was updated on November 3, 2026 and 해피캠퍼스 on October 30, 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.*