# U vs 해커스보카

The clearest difference is in-app purchases: U at none against 해커스보카's 1. U also leads on iOS requirement (13.0 vs 15.0). 해커스보카's advantage is review sentiment (55% vs 29%) and update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. 해커스보카 sells 1 one-off in-app purchase. U asks for nothing beyond the download.

U ships an update every 3 months, 해커스보카 every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | U | 해커스보카 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/u-knou/id1346391846/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 29.1% of reviews | **54.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 70 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Korea National Open University](https://appshunter.io/developer/504499080) | [Champ Study Institute](https://appshunter.io/developer/466747997) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-knou/id1346391846)

Access over 1000 online courses from Korea National Open University, suitable for both students and lifelong learners. Enjoy a seamless learning experience with features like video lecture downloads and personalized notifications.

**Highlights:** 1000+ diverse online courses, PC-like learning environment, Video lecture downloads, Personalized learning schedules, Course-related notifications, Access for students and general public

**In-app purchases:** none


### 해커스보카

[App page](https://appshunter.io/ios/app/sat/id6443891707)

Master English vocabulary for various exams like TOEFL, IELTS, and SAT with engaging games and personalized learning tools. This app offers free vocabulary games and optional paid features for comprehensive word study.

**Highlights:** Vocabulary games for effective memorization, Selectable study days for focused learning, Create and review custom word lists, Access to recommended English learning resources, Paid features for full textbook vocabulary study, Synonym quizzes and example sentence reviews

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 해커스토플보카 365일 이용권 | $9.99 | one-time |


## Frequently asked questions

### Is U free?

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

### Is 해커스보카 free?

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

### Do U or 해커스보카 have ads?

Neither U nor 해커스보카 shows ads.

### Which is updated more often, U or 해커스보카?

U ships an update every 3 months, and 해커스보카 every 3 weeks. Most recently, U was updated on October 23, 2026 and 해커스보카 on October 25, 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.*