# Focus Dive vs Sumbi

The clearest difference is in-app purchases: Focus Dive at none against Sumbi's 3. Sumbi's advantage is iOS requirement (16.4 vs 18.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sumbi sells 3 one-off in-app purchases. Focus Dive asks for nothing beyond the download.

Focus Dive ships an update every 11 days, Sumbi weekly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Focus Dive | 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 11 days | **Weekly** |
| Monetization | — | Free |
| Size | 62 MB | 94 MB |
| Requires iOS | 18.2 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seung Ah Shin](https://appshunter.io/developer/1867877223) | [나이스데이](https://appshunter.io/developer/1751418356) |

## What reviewers say

### Focus Dive

[App page](https://appshunter.io/ios/app/focus-dive-study-work-timer/id6760871510)

**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 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 Focus Dive free?

Focus Dive is free to download, with no in-app purchases.

### Is Sumbi free?

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

### Do Focus Dive or Sumbi have ads?

Neither Focus Dive nor Sumbi shows ads.

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

Focus Dive ships an update every 11 days, and Sumbi weekly. Most recently, Focus Dive was updated on October 25, 2026 and Sumbi on October 29, 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.*