# Doongsil vs Flowave

The clearest difference is in-app purchases: Doongsil at none against Flowave's 10. Doongsil also leads on iOS requirement (15.0 vs 17.6). Flowave's advantage is ads (none vs shown) and update cadence (weekly vs every 18 months). On price and device support there is nothing between them.

Both are free to download. Flowave sells 6 in-app purchases, starting at $3.99 per month. Doongsil asks for nothing beyond the download.

Doongsil ships an update every 18 months, Flowave weekly. The most recent releases landed on May 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Doongsil | Flowave |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 33 MB | 49 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Minseok Song](https://appshunter.io/developer/1680507122) | [hyungwoo park](https://appshunter.io/developer/1773336912) |

## What reviewers say

### Doongsil

[App page](https://appshunter.io/ios/app/doongsil-goal-timer/id6478134949)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flowave

[App page](https://appshunter.io/ios/app/flowave-pomodoro-focus-timer/id6743940939)

This app uses a Pomodoro timer with calming wave sounds and a visual surfer companion to enhance focus for study, work, or meditation. It offers customizable soundscapes, progress tracking, and Apple Watch synchronization.

**Highlights:** Pomodoro focus timer, Calming wave soundscapes, Visual wave animations, Focus time tracking, Apple Watch sync, Home Screen widgets, Dark mode

**Features:** Family Sharing, Apple Watch app

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Surfer (Monthly) | $3.99 | per month |
| Pro Surfer (Yearly) | $9.99 | per year |
| Surfer | $0.99 | one-time |
| FloWatch Pro | $9.99 | one-time |
| All-Time Plan | $19.99 | one-time |
| Lifetime Family Plan | $39.99 | one-time |


## Frequently asked questions

### Is Doongsil free?

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

### Is Flowave free?

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

### Do Doongsil or Flowave have ads?

Doongsil shows ads; Flowave does not.

### Which is updated more often, Doongsil or Flowave?

Doongsil ships an update every 18 months, and Flowave weekly. Most recently, Doongsil was updated on May 25, 2026 and Flowave on September 7, 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.*