# 스마트 단말관리 에이전트 vs Sumbi

The clearest difference is in-app purchases: 스마트 단말관리 에이전트 at none against Sumbi's 7. 스마트 단말관리 에이전트 also leads on device support (3 vs 1). Sumbi's advantage is update cadence (every 9 days vs every 3 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Sumbi sells 7 one-off in-app purchases. 스마트 단말관리 에이전트 asks for nothing beyond the download.

스마트 단말관리 에이전트 ships an update every 3 months, Sumbi every 9 days. The most recent releases landed on November 4, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | 스마트 단말관리 에이전트 | Sumbi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sumbi-study-focus-timer/id6802502926/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 63 MB | 154 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DKI Technology Co., Ltd](https://appshunter.io/developer/1028968675) | [나이스데이](https://appshunter.io/developer/1751418356) |

## What reviewers say

### 스마트 단말관리 에이전트

[App page](https://appshunter.io/ios/app/id6478089489)

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

**In-app purchases:** none


### Sumbi

[App page](https://appshunter.io/ios/app/sumbi-study-focus-timer/id6802502926)

This app uses a focus timer to encourage users to put down their phones. Successful focus sessions grow a virtual ocean and attract sea creatures, creating a calming visual reward for digital detox and concentration building.

**Highlights:** Focus timer for study and work, Digital detox and screen time reduction, Virtual ocean with collectible sea creatures, Gamified focus sessions, Share creatures with friends, Ad-free experience

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Haenyeo Fins | $0.99 | one-time |
| Shallow Sea Creature | $0.99 | one-time |
| Haenyeo Hat | $1.99 | one-time |
| Haenyeo Breath Bubbles | $1.99 | one-time |
| Deep Sea Creature | $1.99 | one-time |
| Haenyeo Wetsuit | $2.99 | one-time |
| Abyssal Creature | $2.99 | one-time |


## Frequently asked questions

### Is 스마트 단말관리 에이전트 free?

스마트 단말관리 에이전트 is free to download, with no in-app purchases.

### Is Sumbi free?

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

### Do 스마트 단말관리 에이전트 or Sumbi have ads?

Neither 스마트 단말관리 에이전트 nor Sumbi shows ads.

### Which is updated more often, 스마트 단말관리 에이전트 or Sumbi?

스마트 단말관리 에이전트 ships an update every 3 months, and Sumbi every 9 days. Most recently, 스마트 단말관리 에이전트 was updated on November 4, 2026 and Sumbi on November 13, 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.*