# Reaction Workout Timer vs Dorundorun

The clearest difference is update cadence: Dorundorun at every 6 days against Reaction Workout Timer's every 3 weeks. Dorundorun also leads on iOS requirement (15.1 vs 18.2). On price, ads, 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.

Reaction Workout Timer ships an update every 3 weeks, Dorundorun every 6 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Reaction Workout Timer | Dorundorun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dorundorun/id6758323341/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | — | Free |
| Size | 5 MB | 30 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hitfire Production AB](https://appshunter.io/developer/1517601288) | [Ha Jeong](https://appshunter.io/developer/1872281320) |

## What reviewers say

### Reaction Workout Timer

[App page](https://appshunter.io/ios/app/reaction-workout-timer/id6755075522)

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

**In-app purchases:** none


### Dorundorun

[App page](https://appshunter.io/ios/app/dorundorun/id6758323341)

Connect with fellow Korean runners in Dallas through this community app. Organize and join group runs, track your attendance, and share your running experiences. It's designed for flexible participation and fostering social connections within the local running scene.

**Highlights:** Join scheduled and spontaneous group runs, Track attendance and view personal stats, Share photos and connect with other runners, Organize meetups and plan flash runs, Personalized runner profiles and notifications, Seamless KakaoTalk group integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Workout Timer free?

Reaction Workout Timer is free to download, with no in-app purchases.

### Is Dorundorun free?

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

### Do Reaction Workout Timer or Dorundorun have ads?

Neither Reaction Workout Timer nor Dorundorun shows ads.

### Which is updated more often, Reaction Workout Timer or Dorundorun?

Reaction Workout Timer ships an update every 3 weeks, and Dorundorun every 6 days. Most recently, Reaction Workout Timer was updated on October 28, 2026 and Dorundorun 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.*