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Best Calendar Week Calculator Apps

248+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated August 2026

If you already know Date and Time Calculator, this is the deeper bench. 248+ calendar week calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Calendar Week Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Date and Time CalculatorDate and Time CalculatorFree4.7★ (9.7K)YesNoAug 2026
2Week Calendar - Smart PlannerWeek Calendar - Smart PlannerFree4.4★ (10K)YesYesAug 2026
3Calendar Week CalculatorCalendar Week CalculatorFree—NoNoMay 2026
4Days + Date + Time CalculatorDays + Date + Time CalculatorFree4.7★ (862)YesNoAug 2026
5This Calendar WeekThis Calendar WeekFree—NoNoMay 2026
6Calendar weeks for your watchCalendar weeks for your watch$0.99—NoNoMay 2026
7Calenderweek+Calenderweek+Free—NoNoMay 2026
8OnlyWeekNo.OnlyWeekNo.Free—YesYesMay 2026

Top Picks for Calendar Week Calculator

Date and Time Calculator#1

Date and Time Calculator by 山 钟

Editor's Choice
🔧 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

  • 💡 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
Week Calendar - Smart Planner#2

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

Sync Agenda Tasks & Reminders
Strong Contender
📊 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

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 💰 Aggressive push for subscription upgrade
  • 🔒 Concerns about privacy and data collection

More Calendar Week Calculator apps to explore

4
Days + Date + Time Calculator
Days + Date + Time Calculator
Days + Date + Time Calculator
Days Between Two Dates
Free

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.

Calculate days between datesCalculate duration between dates and timesCalculate duration between times
📊 Productivity
(862)
ad-supported
5
This Calendar Week
This Calendar Week
This Calendar Week
by Arthur Kahwa
Free
🔍 Reference
(0)
6
Calendar weeks for your watch
Calendar weeks for your watch
Calendar weeks for your watch
Calendar weeks complications
$0.99

Display the current calendar week on your Apple Watch with customizable complication options. Choose from various calculation methods to easily track dates and weeks.

Show current calendar week on Apple WatchSupports all complication typesMultiple week calculation modes
🔧 Utilities
(0)
paid
7
Calenderweek+
Calenderweek+
Calenderweek+
Which week are we in?
Free
📊 Productivity
(0)
8
OnlyWeekNo.
OnlyWeekNo.
OnlyWeekNo.
Simply shows the week number
Free
🔧 Utilities
(0)
9
Work Week Calculator
Work Week Calculator
Work Week Calculator
WorkWeekCalc
Free

This app helps professionals quickly determine work weeks and corresponding dates. It allows customization of the fiscal year start and the first day of the work week, with the current work week displayed on the app icon.

Determine work week from a dateDetermine date from a work weekConfigure fiscal year start
💼 Business
(3)
free
10
Calendars: Schedule Planner
Calendars: Schedule Planner
Calendars: Schedule Planner
2026 Daily Organizer・Reminder
Free

This app combines a calendar, task manager, daily planner, and habit tracker. It helps users plan their day, build habits, boost productivity, and stay organized with seamless syncing across all Apple devices. Features include event creation, to-do list management, natural language input, and integration with popular meeting platforms.

Calendar, task, and habit managementDaily, weekly, and monthly viewsNatural language event creation
📊 Productivity
(121K)
free with in-app purchases
11
Week Day Calendar
Week Day Calendar
Week Day Calendar
by Anders Falck
$3.99
📚 Education
(0)
12
Agendo Week Calendar
Agendo Week Calendar
Agendo Week Calendar
Your weekly planner, your way
Free
📊 Productivity
(0)
13
Week View Calendar
Week View Calendar
Week View Calendar
by Apptown Studio AB
Free

This calendar app offers a clear and simple overview of your week, allowing you to customize different views for work, family, or combined schedules. It focuses on essential features and integrates seamlessly with your device's native calendar storage.

Customizable weekly viewsFocus on content clarityIntegrates with device calendar
📊 Productivity
(1)
free with in-app purchases
14
DayFinder - Date Calculator
DayFinder - Date Calculator
DayFinder - Date Calculator
Calculate Dates & Days
Free
📊 Productivity
(0)
15
Calendar App- Schedule Planner
Calendar App- Schedule Planner
Calendar App- Schedule Planner
Plan Your Day, Week & Life
Free
📊 Productivity
(0)
16
Business Days Calculator
Business Days Calculator
Business Days Calculator
Count workdays past holidays
Free
🔧 Utilities
(0)
17
Seven Calendar
Seven Calendar
Seven Calendar
by Dominic Feira
Free
📊 Productivity
(0)
18
Week Number Calendar
Week Number Calendar
Week Number Calendar
calendar with week numbers
Free
📊 Productivity
(0)
19
EZDateCalc
EZDateCalc
EZDateCalc
Simple Date Calculator
Free
🔧 Utilities
(0)
20
Calendar - 2026
Calendar - 2026
Calendar - 2026
2026 Calendar Planner,Reminder
Free

This daily planner and reminder app helps you organize tasks, meetings, and events with customizable views and notifications. It offers to-do lists, checklists, and the ability to add locations and notes to your schedule.

Daily to-do listsMultiple calendar views (day, week, month, year)Notification reminders
📊 Productivity
(7)
free with in-app purchases

FAQ about Calendar Week Calculator

What are the best calendar week calculator apps for iPhone?
Date and Time Calculator tops our calendar week calculator apps ranking as of August 2026, with a 4.7-star average from 9.7K App Store ratings, and it's free to download.
Yes — 18 of the top calendar week calculator apps we rank are free to download, including Date and Time Calculator and Week Calendar - Smart Planner.
Date and Time Calculator shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ calendar week calculator apps on the iOS App Store as of August 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.