# Haruda Focus vs Sumbi

The clearest difference is ads: Sumbi at none against Haruda Focus's shown. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Haruda Focus sells 2 one-off in-app purchases and Sumbi sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Haruda Focus against 5.0 for Sumbi. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Haruda Focus ships an update every 4 days, Sumbi weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Haruda Focus | Sumbi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/haruda-focus-study-timer/id1571032496/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sumbi-study-focus-timer/id6802502926/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Free | Free |
| Size | 49 MB | 94 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DaeMyeong Lee](https://appshunter.io/developer/1537291429) | [나이스데이](https://appshunter.io/developer/1751418356) |

## What reviewers say

### Haruda Focus

[App page](https://appshunter.io/ios/app/haruda-focus-study-timer/id1571032496)

Turn focused study sessions into a game with this timer app. It uses the Pomodoro technique to help you measure and improve your concentration. Feel real focus and achieve more.

**Highlights:** Pomodoro technique timer, Study time measurement, Focus improvement, Gamified concentration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $0.99 | one-time |
| Lifetime | $4.99 | one-time |


### Sumbi

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

This app encourages users to spend less time on their phones by gamifying digital detox. Users engage in timed "dives" away from their devices, earning virtual sea creatures based on their focus duration. It offers a peaceful, non-punitive approach to building healthier digital habits.

**Highlights:** Timed phone-free dives, Unlock virtual sea creatures, Personalized ocean environment, Buddy dive feature, Night sea creatures, Diary-like dive log

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shallow Sea Creature | $0.99 | one-time |
| Deep Sea Creature | $1.99 | one-time |
| Abyssal Creature | $2.99 | one-time |


## Frequently asked questions

### Is Haruda Focus free?

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

### Is Sumbi free?

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

### Which has better reviews, Haruda Focus or Sumbi?

Haruda Focus and Sumbi are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Haruda Focus or Sumbi have ads?

Haruda Focus shows ads; Sumbi does not.

### Which is updated more often, Haruda Focus or Sumbi?

Haruda Focus ships an update every 4 days, and Sumbi weekly. Most recently, Haruda Focus was updated on October 30, 2026 and Sumbi on October 31, 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.*