# 해커스 ONE vs VocaSheet

The clearest difference is in-app purchases: VocaSheet at none against 해커스 ONE's 4. VocaSheet also leads on update cadence (weekly vs fortnightly). 해커스 ONE's advantage is iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. 해커스 ONE sells 4 one-off in-app purchases. VocaSheet asks for nothing beyond the download.

해커스 ONE ships an update fortnightly, VocaSheet weekly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 해커스 ONE | VocaSheet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (10 ratings)](https://appshunter.io/ios/app/one/id1538534916/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 62.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 192 MB | 11 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Champ Study Institute](https://appshunter.io/developer/466747997) | [hyunsang ?](https://appshunter.io/developer/1853586885) |

## What reviewers say

### 해커스 ONE

[App page](https://appshunter.io/ios/app/one/id1538534916)

Access a wide range of online courses from various fields, including language tests, civil service exams, and professional certifications. Enjoy convenient features like organized course lists, free lectures, and interactive learning tools. Stay updated with the latest educational news and share information with fellow learners.

**Highlights:** Organized course catalog by interest, Free lectures and study materials, Personalized 'My Courses' list, Note-taking and Q&A with instructors, Content sharing and community board, Access to all online lectures in one app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 왕초보  그림으로 배우는 일본어 회화 | $2.99 | one-time |
| 원어민이 알려주는 리얼 여행영어 - 해외 현지 촬영 | $2.99 | one-time |
| 이유리의 누구나 쉽게 배우는 여행 중국어 (전반부) | $2.99 | one-time |
| 제2외국어 대표강의 - 9강좌 종합 | $30.99 | one-time |


### VocaSheet

[App page](https://appshunter.io/ios/app/vocasheet/id6755912108)

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

**In-app purchases:** none


## Frequently asked questions

### Is 해커스 ONE free?

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

### Is VocaSheet free?

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

### Do 해커스 ONE or VocaSheet have ads?

Neither 해커스 ONE nor VocaSheet shows ads.

### Which is updated more often, 해커스 ONE or VocaSheet?

해커스 ONE ships an update fortnightly, and VocaSheet weekly. Most recently, 해커스 ONE was updated on November 7, 2026 and VocaSheet on November 5, 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.*