Chrona: Age Calculator
Exact age & date calculator
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Chrona is the fastest, cleanest way to work out exactly how old someone is — to the day. No ads, no accounts, no sign-up, and it works completely offline.
Open the app and you're already there: pick a date of birth and Chrona instantly shows the exact age in years, months and days, plus the total days, weeks, hours and minutes, the weekday it fell on, and a countdown to the next birthday.
Need the age as of a specific date — like a test date or a deadline? Flip on "as of a date" and Chrona gives you a precise chronological age (years; months; days), the format used in standardized assessments.
INCLUDED
• Exact age from any date of birth
• Age as of any specific date
• Total days, weeks, hours and minutes
• Day of the week born + next-birthday countdown
CHRONA PRO — one-time unlock, no subscription
• Difference mode: the exact span between any two dates
• Saved people: keep everyone's age live, sorted by whose birthday is next
• Share & export any result in a tap
Private by design. Everything stays on your device — Chrona never collects your data and never needs the internet.
Terms of Use (EULA): https://obelisk.club/agecalculator/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 632.8 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Chrona Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.