금연 일지 (Quit Smoking Journal) is an Android app developed by GBAlright. It is a free app in the Business & Productivity category. With this app, you can track your smoking habits on a daily basis.

The app allows you to record your smoking habits and automatically calculates the amount of harmful substances inhaled, the money wasted, and the time your lifespan is shortened due to smoking.

Quit Smoking Journal is a powerful tool to help you quit smoking and improve your health. Start using it today and take control of your smoking habits.

The app offers several useful features, including:

1. Writing your quit smoking journal

2. Editing or deleting journal entries

3. Automatic calculation of smoke-free days

4. Monthly or overall view of smoking habits

5. Calculation of harmful substances inhaled, shortened lifespan, and wasted money

6. Customizable cigarette cost (default is 2500 won before 2015, 4500 won after 2015)