SLS vs DYB Window
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SLS
This is a smart application for Korean language learning, developed by IAP EDU. It offers an educational experience focused on mastering the Korean language.
- Korean language learning
- Smart application
- Educational content
- Developed by IAP EDU
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IAP에듀에서 제작한 국어 학습용 스마트 어플리케이션입니다.
DYB Window
This app allows students to submit homework and tests, receive individual feedback, and track their learning progress. It builds a unique history of academic achievements for comprehensive performance management.
- Submit homework and tests
- Receive individual feedback
- Track learning progress
- View class schedules
- Check shuttle bus information
- Manage retakes and supplementary lessons
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"DYB Window" 앱을 통해 학생들은 숙제와 테스트를 확인하고 제출할 수 있으며, 개별 Feedback을 받게 됩니다. 또한, 모든 학습 성과 Data를 플랫폼에 축적하고 학생 개별 고유의 history를 생성해 종합적인 학습 성과를 관리합니다. [DYB Window의 주요 기능] ① 학습과제 제출 ② 수업일지 확인 ③ 수업시간 확인 ④ 클래스 확인 ⑤ 셔틀버스 확인 ⑥ 재시험 및 보충 확인
Screenshots
Verdict
The clearest difference is update cadence: DYB Window at fortnightly against SLS's every 8 months. DYB Window also leads on review sentiment (49% vs 33%). SLS's advantage is iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SLS ships an update every 8 months, DYB Window fortnightly. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | SLS | DYB Window |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.3 (20 ratings) — better |
| Positive reviews | 33.3% of reviews | 49.2% of reviews — better |
| Number of ratings | — | 20 — better |
| Update frequency | Every 8 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 13 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | IAP EDU | Edu Brain Co. Ltd |
Customer experience
SLS
DYB Window
In-app purchases
SLS
No in-app purchases
DYB Window
No in-app purchases
