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Best Date Calculation Apps

243+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated September 2026

Date and Time Calculator is the household name in date calculation, but it's far from the only option. We track 243+ alternatives and competitors on iOS β€” many free, many higher-rated than you'd expect.

Compare top Date Calculation Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Date and Time CalculatorDate and Time CalculatorFree4.7β˜… (9.7K)YesNoSep 2026
2Time & Date CalculatorTime & Date CalculatorFree3.4β˜… (68)NoYesAug 2026
3Date Calendar CalculatorDate Calendar CalculatorFree4.9β˜… (29)YesYesAug 2026
4The Date Calculator PROThe Date Calculator PROFree4.7β˜… (2.6K)YesYesSep 2026
5My Love - Relationship CounterMy Love - Relationship CounterFree4.8β˜… (957K)NoYesSep 2026
6Date Calculator Β±Date Calculator Β±Freeβ€”NoNoJul 2026
7Date Calculator - DateMathDate Calculator - DateMathFree5.0β˜… (1)NoYesJun 2026
8Date Calculator, Days CalcDate Calculator, Days CalcFree4.5β˜… (131)NoYesSep 2026

Top Picks for Date Calculation

Date and Time Calculator#1

Date and Time Calculator by ε±± ι’Ÿ

Editor's Choice
πŸ”§ Utilities
4.7😐(9.7K ratings)
FreeAds
Date and Time Calculator screenshot 1
Date and Time Calculator screenshot 2
Date and Time Calculator screenshot 3

Calculate the exact number of days, hours, and seconds between any two dates. This tool also allows you to find the date before or after a specified period, making it useful for tracking deadlines, events, or financial products.

What We Love

  • πŸ’‘ Helpful for tracking dates and time
  • πŸ‘ Simple and easy to use
  • πŸš€ Accurate calculations
  • πŸš€ Useful for various purposes (medication management, work timelines, etc.)

Room to Improve

  • πŸ› Ads are intrusive and difficult to close
  • πŸ› Compatibility issues on iPad
  • πŸ› Bugs with date/time calculations
  • πŸ› Language issues with ads
Time & Date Calculator#2

Time & Date Calculator by timeanddate.com

Perform calculations with time
Strong Contender
πŸ”§ Utilities
3.4😐(68 ratings)
FreeIn-App Purchases
Time & Date Calculator screenshot 1
Time & Date Calculator screenshot 2
Time & Date Calculator screenshot 3
Time & Date Calculator screenshot 4
Time & Date Calculator screenshot 5

Calculate exact durations between times, including seconds, and account for time zone differences and DST. View results in various units and share them easily. Supports a wide year range.

What We Love

  • πŸ‘ Simple and easy to use
  • βœ… Does what it says it does
  • πŸš€ Fast and efficient
  • πŸ‘Œ Great for date calculations
  • ✨ Useful for medication tracking
  • 🌟 Powerful online version

Room to Improve

  • πŸ› App crashes frequently
  • ❌ Settings toggles not working
  • 🚫 Missing website features
  • ⏳ Outdated app
  • πŸ’Έ Expensive for limited features
  • πŸ“‰ Poor UI design
Date Calendar Calculator#3

Date Calendar Calculator by Yuno Solutions Sdn Bhd

Calculate Calendar Date & Time
Worth Considering
πŸ”§ Utilities
4.9(29 ratings)
FreeAdsIn-App Purchases
Date Calendar Calculator screenshot 1
Date Calendar Calculator screenshot 2
Date Calendar Calculator screenshot 3
Date Calendar Calculator screenshot 4
Date Calendar Calculator screenshot 5
Date Calendar Calculator screenshot 6

This app helps you calculate date and time durations, add or subtract time from dates, and determine working days. It also converts between calendars and time zones, and estimates ovulation and pregnancy due dates. The design is simple and intuitive.

More Date Calculation apps to explore

FAQ about Date Calculation

What are the best date calculation apps for iPhone?
Date and Time Calculator tops our date calculation apps ranking as of September 2026, with a 4.7-star average from 9.7K App Store ratings, and it's free to download.
Yes β€” 19 of the top date calculation apps we rank are free to download, including Date and Time Calculator and Time & Date Calculator.
Date and Time Calculator shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 243+ date calculation apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This application allows you to calculate the precise duration between any two given dates, down to the second. It can also determine future or past dates based on a specified period.
Key features include calculating the exact time distance between any two points in time, down to the second. It also offers functionality to find the date before or after a certain period, useful for planning and tracking.

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