회독HSK vs SpeedJack 21
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
회독HSK
Prepare for the Chinese proficiency test (HSK) with this comprehensive vocabulary app. It offers audio support, example sentences, a personal vocabulary list, and a quick review feature. Enjoy an ad-free experience with night and landscape modes for comfortable study.
- HSK vocabulary builder
- Audio pronunciation support
- Example sentences
- Personalized word lists
- Quick review function
- Night mode
- Ad-free experience
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중국어 능력시험 HSK 대비용 한자 단어장 어플입니다. 우선 회독HSK(AD)버전을 이용해보시길 추천합니다. -----회독HSK(AD)와 다른점----- 1. 음성지원 2. 전 급수 이용가능 3. 전 급수 예문지원: 현지인들이 제작한 예문으로 명쾌하게 공부한다! 3. 내 단어장 : 잘 안외워 지는 단어를 모아서 회독한다! 4. 안경기능 : 회독을 빨리하는 기능 (과거 공부한것을 빨리 보기 좋음) 5. 원터치 기능 : 한글과 일어를 원버튼으로 동시에 확인하는 기능 6. 나이트 모드 : 밤에 내 눈을 편하게 해줌 7. 가로모드 8. 광고 일절 없음 9. 비행기 모드에서도 가능 많은 사랑 부탁드립니다. (자매품:회독TOEIC, 회독JLPT)
SpeedJack 21
Practice your blackjack basic strategy with this educational app. Achieve consecutive correct answers to rank your time record on the server and improve your casino winning average.
- Blackjack basic strategy practice
- Consecutive correct answer challenge
- Server-based time ranking
- Improve casino winning average
- User sign-in required for challenges
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It is an application which helps your blackjack skill. You can practice basic strategy of blackjack with this application. If you succeed 20 times consecutive correct answer, your time record spent will be ranked on the server. Please sign-in before challenge. If you can pass this challenge easily without failing in short time, your winning average at the casino will be increasing.
Screenshots
Verdict
The clearest difference is price: SpeedJack 21 at Free against 회독HSK's $19.99. SpeedJack 21 also leads on update cadence (fortnightly vs monthly) and iOS requirement (13.0 vs 15.6). 회독HSK's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SpeedJack 21 is free to download; 회독HSK costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
회독HSK ships an update monthly, SpeedJack 21 fortnightly. The most recent releases landed on September 23, 2026 and June 4, 2026 respectively.
| Parameter | 회독HSK | SpeedJack 21 |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 95.8% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 86 MB |
| Age rating | 12+ | 12+ |
| Developer | LEE YONGHEE | KwangRim Ahn |
Customer experience
회독HSK
SpeedJack 21
In-app purchases
회독HSK
No in-app purchases
SpeedJack 21
No in-app purchases
