# 세컨드 윈드 vs Caffeine Flow

The clearest difference is ads: 세컨드 윈드 at none against Caffeine Flow's shown. 세컨드 윈드 also leads on iOS requirement (12.0 vs 15.0). Caffeine Flow's advantage is update cadence (fortnightly vs every 2 months). 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.

세컨드 윈드 ships an update every 2 months, Caffeine Flow fortnightly. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 세컨드 윈드 | Caffeine Flow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 119 MB | 86 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Medi Plus Solution Co.,Ltd](https://appshunter.io/developer/1247358246) | [Chinipy](https://appshunter.io/developer/1829955713) |

## What reviewers say

### 세컨드 윈드

[App page](https://appshunter.io/ios/app/id1303426423)

This app provides personalized health management based on your medical history and lifestyle. It offers tools for tracking blood sugar, blood pressure, exercise, meals, weight, medication, and sleep. Connect with experts for personalized guidance and information.

**Highlights:** Personalized health analysis, Blood sugar and pressure tracking, Customized exercise and meal plans, Medication and weight management, Expert health consultations, Sleep and stress monitoring

**In-app purchases:** none


### Caffeine Flow

[App page](https://appshunter.io/ios/app/caffeine-flow-sleep-tracker/id6759970536)

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

**In-app purchases:** none


## Frequently asked questions

### Is 세컨드 윈드 free?

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

### Is Caffeine Flow free?

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

### Do 세컨드 윈드 or Caffeine Flow have ads?

Caffeine Flow shows ads; 세컨드 윈드 does not.

### Which is updated more often, 세컨드 윈드 or Caffeine Flow?

세컨드 윈드 ships an update every 2 months, and Caffeine Flow fortnightly. Most recently, 세컨드 윈드 was updated on October 14, 2026 and Caffeine Flow 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.*