Add a person or pet
Enter a name and date of birth, add a relationship or notes, or import birthdays from Contacts.
Private iPhone age calculator
Every age has a story.
Calculate exact ages in years, months and days. Remember every birthday. Notice the rare life milestones most calendars miss.
Free to downloadPrivate by designNo account needed
Instant answer
How old am I, exactly?
Choose a date of birth for a precise age in calendar years, months and days. In LifeDates, that answer becomes a living timeline with birthdays, facts and milestones.
—Years
—Months
—Days
Free on iPhone
Keep the people. Keep the moments.
Save up to three people free, use the exact age calculator, see birthday countdowns, schedule reminders and share simple cards. Premium adds unlimited profiles, advanced milestones, widgets and extra themes.
Download on theApp Store
Inside the app
One calm place for every date.
People, pets, birthdays, exact ages and those strange, wonderful milestones—organised without turning your personal life into another productivity system.
For every kind of family
Their years count differently. Their days matter just the same.
Create a profile for each pet and see their exact calendar age alongside an estimated age in pet years. LifeDates keeps birthdays, days alive and the next little milestone together—because they are part of the family too.
Human ageYears, months and days
Pet yearsDog, cat and more
Days aliveEvery day counted
BirthdaysCountdowns and reminders
Pet-year figures are friendly estimates for interest and celebration—not veterinary guidance.
How it works
A date becomes a timeline.
Start with one birthday. LifeDates does the date maths, keeps the next moment visible and reminds you before it arrives.
See their exact age
View years, months, days, total days and weeks lived, birthday facts, zodiac details and pet years.
Remember what is next
Set birthday or milestone reminders, glance at widgets and export important dates to Apple Calendar.
Useful guides
Answers for life's date maths.
Clear, practical guides for exact ages, birthday countdowns, reminders, pet years and the moments worth saving.
Primary guide
How to calculate an exact age in years, months and days
Age calculator guide · 6 min iPhoneNever forget a birthday again
Birthday reminders · 5 min Age factsHow many days old am I?
Days lived · 4 min Free dog calculatorHow old is my dog in human years?
Dog years · 5 min CountdownsHow many days until a birthday?
Birthday countdown · 4 min MilestonesFind 1,000-day and 10,000-day milestones
Life milestone guide · 5 min WidgetsPut upcoming birthdays on your iPhone Home Screen
Widget guide · 4 min Free cat calculatorHow old is my cat in human years?
Cat years · 5 min All resourcesBrowse every calculator and guide
Guides hub →FAQ
The exact answer.
Quick answers about the LifeDates age calculator, birthday reminders, pet ages, widgets and privacy.
How can I calculate my exact age in years, months and days?
Use the free Calculator tab, select a date of birth and LifeDates shows the exact calendar age plus total days and weeks lived. You do not need to save a profile.
Learn more about exact age calculation →
Learn more about exact age calculation →
Can LifeDates remind me before someone's birthday?
Yes. Save the person, turn on birthday reminders and choose when the local iPhone notification should arrive. Premium adds more advanced milestone reminder options.
Learn more about iPhone birthday reminders →
Learn more about iPhone birthday reminders →
How do I count down the days until my next birthday?
Add your birthday to LifeDates and your Today screen shows the next birthday and how many days remain. The countdown rolls forward automatically each year.
Learn more about birthday countdowns →
Learn more about birthday countdowns →
Does LifeDates calculate dog and cat age in human years?
Yes. Create a pet profile to see calendar age, days alive, birthdays, milestones and an estimated animal age for supported pet types.
Calculate dog age → · Calculate cat age →
Calculate dog age → · Calculate cat age →
Can I see birthdays in an iPhone widget?
LifeDates Premium includes Home Screen and Lock Screen widgets that keep upcoming birthdays and important dates visible without opening the app.
Learn how to add a birthday widget →
Learn how to add a birthday widget →
Is my birthday and age data private?
Saved profiles, birthdays, notes and reminder settings are stored locally on your device. LifeDates requires no account and schedules notifications using iOS.
Read the LifeDates privacy policy →
Read the LifeDates privacy policy →
Your life, in dates
Don't just count the years. Notice them.
Download LifeDates free and turn the birthdays, ages and milestones you care about into one calm, private timeline.
Download free on theApp Store