Best Calendar Week Calculator Apps

247+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated September 2026

If you already know Days + Date + Time Calculator, this is the deeper bench. 247+ calendar week calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Calendar Week Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Days + Date + Time CalculatorDays + Date + Time CalculatorFree4.7★ (862)YesNoSep 2026
2Date and Time CalculatorDate and Time CalculatorFree4.7★ (9.7K)YesNoSep 2026
3Week Calendar - Smart PlannerWeek Calendar - Smart PlannerFree4.4★ (10K)YesYesSep 2026
4Calendar Week CalculatorCalendar Week CalculatorFreeNoNoMay 2026
5This Calendar WeekThis Calendar WeekFreeNoNoMay 2026
6Work Week CalculatorWork Week CalculatorFree4.3★ (3)NoNoMay 2026
7Calendar weeks for your watchCalendar weeks for your watch$0.99NoNoSep 2026
8Week Number · Calendar WeeksWeek Number · Calendar WeeksFreeNoJul 2026

Top Picks for Calendar Week Calculator

Days + Date + Time Calculator#1

Days + Date + Time Calculator by 山 钟

Days Between Two Dates
Editor's Choice
📊 Productivity
4.7😊(862 ratings)
FreeAds
Days + Date + Time Calculator screenshot 1
Days + Date + Time Calculator screenshot 2
Days + Date + Time Calculator screenshot 3

Calculate the duration between two dates and times. This tool helps you find the exact number of days, hours, and minutes between any two points in time.

What We Love

  • 👍 Excellent app
  • 👍 Helpful and useful
  • 👍 Great variety of fonts and symbols
  • 👍 Easy to use
  • 👍 Convenient features

Room to Improve

  • 🐛 Excessive advertising
  • 🐛 Compatibility issues with updates
  • 🔋 High battery consumption
  • 🔒 Privacy concerns with ads
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

  • 💡 Helpful for tracking dates and time
  • 👍 Simple and easy to use
  • 🚀 Accurate calculations
  • 🚀 Useful for various purposes (medication management, work timelines, etc.)

Room to Improve

  • 🐛 Ads are intrusive and difficult to close
  • 🐛 Compatibility issues on iPad
  • 🐛 Bugs with date/time calculations
  • 🐛 Language issues with ads
Week Calendar - Smart Planner#3

Week Calendar - Smart Planner by Do More Mobile, LLC.

Sync Agenda Tasks & Reminders
Worth Considering
📊 Productivity
4.4😐(10K ratings)
FreeAdsIn-App Purchases
Week Calendar - Smart Planner screenshot 1
Week Calendar - Smart Planner screenshot 2
Week Calendar - Smart Planner screenshot 3
Week Calendar - Smart Planner screenshot 4
Week Calendar - Smart Planner screenshot 5
Week Calendar - Smart Planner screenshot 6

This app offers a highly customizable calendar experience with multiple view options and automation tools. It allows for easy event management, integration with popular calendar services, and includes features like weather forecasts and calendar insights. An optional Pro version unlocks additional widgets and features.

What We Love

  • 👍 Excellent calendar app
  • 🚀 Highly customizable
  • 💡 Useful features like color-coding, templates, and rolling events
  • 👍 Easy to use and organize schedule
  • 👍 Seamless integration with native iOS calendar

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 💰 Aggressive push for subscription upgrade
  • 🔒 Concerns about privacy and data collection
  • 🔄 Removal of previously available free features

More Calendar Week Calculator apps to explore

FAQ about Calendar Week Calculator

What are the best calendar week calculator apps for iPhone?
Days + Date + Time Calculator tops our calendar week calculator apps ranking as of September 2026, with a 4.7-star average from 862 App Store ratings, and it's free to download.
Yes — 19 of the top calendar week calculator apps we rank are free to download, including Days + Date + Time Calculator and Date and Time Calculator.
Days + Date + Time Calculator shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 247+ calendar week calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app allows you to calculate the duration between two specific dates and times. You can find the exact number of days, hours, and minutes that have passed or will pass between any two given points in time.
The primary features include calculating the number of days between two dates, determining the duration between two dates and times, and calculating the duration between two specific times. It provides precise results for your time span calculations.