# 일기짱 vs 스마트 가스 스니퍼

The clearest difference is update cadence: 스마트 가스 스니퍼 at every 3 weeks against 일기짱's every 3 months. 일기짱's advantage is review sentiment (13% vs 0%) and iOS requirement (13.0 vs 15.0). 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.

일기짱 ships an update every 3 months, 스마트 가스 스니퍼 every 3 weeks. The most recent releases landed on October 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 일기짱 | 스마트 가스 스니퍼 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **12.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 11 MB | 33 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUBEX Co., Ltd.](https://appshunter.io/developer/1503108363) | [NodeTalks](https://appshunter.io/developer/1499948406) |

## What reviewers say

### 일기짱

[App page](https://appshunter.io/ios/app/id1503108364)

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

**In-app purchases:** none


### 스마트 가스 스니퍼

[App page](https://appshunter.io/ios/app/o2-co-h2s/id1517357092)

This app connects to a G-Tag device to display real-time gas levels for O2, CO, and H2S. It provides alerts for dangerous situations, logs alarm history with location data, and allows emergency contact notifications. The app runs in the background for continuous monitoring.

**Highlights:** Real-time O2, CO, H2S gas level display, Connects with G-Tag device, Emergency contact notifications, Alarm history with location logging, Background operation for continuous monitoring, Battery level indicator

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

**In-app purchases:** none


## Frequently asked questions

### Is 일기짱 free?

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

### Is 스마트 가스 스니퍼 free?

스마트 가스 스니퍼 is free to download, with no in-app purchases.

### Do 일기짱 or 스마트 가스 스니퍼 have ads?

Neither 일기짱 nor 스마트 가스 스니퍼 shows ads.

### Which is updated more often, 일기짱 or 스마트 가스 스니퍼?

일기짱 ships an update every 3 months, and 스마트 가스 스니퍼 every 3 weeks. Most recently, 일기짱 was updated on October 2, 2026 and 스마트 가스 스니퍼 on October 29, 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.*