Comparison

U vs 에스덕

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

U

This app allows teachers to monitor student devices in real-time, share their PC screen, and facilitate file transfers. It also includes annotation tools and group management features for collaborative learning.

Highlights
  • Real-time student device monitoring
  • Teacher PC screen sharing
  • File transfer between students and teachers
  • Annotation and whiteboard functionality
  • Student group management
  • Remote control of student devices
Features
Read full description

1. 학생 스마트기기 모니터링 - 선생님은 학생들의 화면을 실시간으로 모니터링 하면서 학생의 수업 상태 및 학생 수업 참여를 유도 할 수 있습니다.  2. 선생님 PC 화면 전송 - 선생님은 수업시간에 사용할 PC 화면을 연결된 모든 학생에게 화면을 전송 합니다. 3. 파일전송 - 학생은 선생님에게 파일을 전송 할 수 있습니다. 4. 판서기능 - 선생님과 학생은 현재 화면 또는 화이트모드(하얀색)를 실행하여 판서를 할 수 있습니다. 5. 그룹관리 - 선생님은 일부 학생을 그룹으로 지정하여 모니터링,원격제어를 할 수 있으며 협업 활동에 활용할 수 있습니다.

About

에스덕

Features
Read full description

에스덕 학생용 앱입니다.

Screenshots

U4 screens
에스덕3 screens

Verdict

The call

The clearest difference is update cadence: 에스덕 at every 4 days against U's every 4 months. U's advantage is iOS requirement (12.3 vs 15.0). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

U ships an update every 4 months, 에스덕 every 4 days. Both last shipped on November 3, 2026.

Scorecard2 real differences · 6 level
U versus 에스덕: the parameters behind the verdict, then further details
ParameterU에스덕
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.3 — better15.0
Further details — not scored
Size8 MB86 MB
Age rating4+4+
DeveloperMIN HO KIMZANG YEOB YANG

In-app purchases

None

U

No in-app purchases

None

에스덕

No in-app purchases

Questions

Is U free?
U is free to download, with no in-app purchases.
Is 에스덕 free?
에스덕 is free to download, with no in-app purchases.
Do U or 에스덕 have ads?
Neither U nor 에스덕 shows ads.
Which is updated more often, U or 에스덕?
U ships an update every 4 months, and 에스덕 every 4 days. Most recently, U was updated on November 3, 2026 and 에스덕 on November 3, 2026.

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