# Doongsil vs Countdown Flow

The clearest difference is ads: Countdown Flow at none against Doongsil's shown. Countdown Flow also leads on update cadence (every 2 days vs every 18 months). Doongsil's advantage is iOS requirement (15.0 vs 18.4). On price, in-app purchases and device support there is nothing between them.

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

Doongsil ships an update every 18 months, Countdown Flow every 2 days. The most recent releases landed on May 25, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Doongsil | Countdown Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 2 days** |
| Size | 33 MB | 1 MB |
| Requires iOS | **15.0** | 18.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Minseok Song](https://appshunter.io/developer/1680507122) | [Calvin Schumbera](https://appshunter.io/developer/1714469992) |

## What reviewers say

### Doongsil

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Countdown Flow

[App page](https://appshunter.io/ios/app/countdown-flow/id6745511538)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Doongsil free?

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

### Is Countdown Flow free?

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

### Do Doongsil or Countdown Flow have ads?

Doongsil shows ads; Countdown Flow does not.

### Which is updated more often, Doongsil or Countdown Flow?

Doongsil ships an update every 18 months, and Countdown Flow every 2 days. Most recently, Doongsil was updated on May 25, 2026 and Countdown Flow on September 20, 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.*