An age calculator app is a digital tool that allows you to calculate the age of a person based on their date of birth. The app usually requires the user to input their date of birth, and then it calculates their age in years, months, days, and even hours and minutes.

Age calculator apps also allow you to calculate the age difference between two individuals, which can be useful for determining age gaps in relationships, or for calculating age differences between family members or colleagues.

Age calculator apps are commonly used for a variety of purposes, including:

Determining eligibility for certain programs or benefits based on age requirements
Calculating retirement age and planning for retirement
Tracking developmental milestones in children
Checking the age of a product or item based on its manufacturing date

Age calculator typically have simple and user-friendly interfaces, making them easy to use for people of all ages.