# SlimTimer vs Sungong

The clearest difference is in-app purchases: Sungong at none against SlimTimer's 2. SlimTimer's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. SlimTimer sells 2 one-off in-app purchases. Sungong asks for nothing beyond the download.

SlimTimer ships an update every 9 days, Sungong every 11 days. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SlimTimer | Sungong |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 11 days |
| Size | 8 MB | 51 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luan Cu Xuan](https://appshunter.io/developer/1892678405) | [joonseo park](https://appshunter.io/developer/1265149051) |

## What reviewers say

### SlimTimer

[App page](https://appshunter.io/ios/app/slimtimer-quick-countdown/id6763735588)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Remove ads | $1.99 | one-time |


### Sungong

[App page](https://appshunter.io/ios/app/sungong-pomodoro-study-timer/id6776498059)

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

**In-app purchases:** none


## Frequently asked questions

### Is SlimTimer free?

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

### Is Sungong free?

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

### Do SlimTimer or Sungong have ads?

Sungong shows ads; SlimTimer does not.

### Which is updated more often, SlimTimer or Sungong?

SlimTimer ships an update every 9 days, and Sungong every 11 days. Most recently, SlimTimer was updated on October 17, 2026 and Sungong on October 25, 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.*