나이 계산기 - 한국 나이, 만 나이, 띠 계산기

📌App Introduction
- Confusing age calculations due to uniform age can be solved with this app.
- A free app that allows you to check your exact age, zodiac sign, and birthday D-Day all at once

✅ Key features
- Automatic calculation of full age, counting age, and annual age based on date of birth
- Zodiac sign (12 zodiac signs) calculation🐰, provided accurately based on the beginning of spring (around February 3 or 4)
- Calculate birthday D-Day, survival days (how many days since birth), and date of reaching a certain age
- Manage friend/family birthdays, sort by birthday, and automatically calculate age difference
- Customized light/dark theme and age display method

🚫 No ads
- Completely free, ad-free, clean experience

⚖️ Legal age criteria explained
- Age: 0 at birth, +1 year for each birthday (legal standard)
- Korean age (counting age): 1 year at birth, +1 year on January 1st every year
- Annual age: Current year - Year of birth (used for military service, etc.)

📊 Example (born in 2020, base year 2025)
- Age: 4 years before birthday, 5 years after birthday
- Korean age: 6 years old
- Age: 5 years old

👥 Recommended for
- Anyone curious about your age, Korean age, or zodiac sign
- People who need to manage birthdays and compare age differences
- People looking for an ad-free age calculation app