Comparison

Shift Calendar vs Weeknummer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Shift Calendar

Easily manage your work schedule with this app designed for shift workers. Customize your shifts, generate schedules automatically, and add important notes to your calendar.

Highlights
  • Customizable shift work
  • Automatic cycle scheduling
  • Calendar notes
  • Clear shift display
Features
Read full description

Shift Calendar is designed  for people who do shift works. It's easy to manage your job and work time - you can customize your shift work - Cycle scheduling, automatic generation of shift work for each day - Calendar notes, write important notes for each day - Shift works display in calendar clearly

About

Weeknummer

Features
Read full description

Week Number – Calendar Do you always know what week number it is? With this app, you can see it at a glance. No hassle with complicated calendars or unnecessary features. Open the app and instantly see the current week number, the corresponding dates, and a clear calendar overview. What does the app do? - Shows the current week number according to the ISO 8601 standard. - Displays the dates for the current week (Monday through Sunday). - Navigate to previous and next weeks using the arrows. - A simple, minimalist design without distractions. Why this app? - Simple: Open the app and instantly see the current week number. - Widget: View the week number directly on your home screen. - No hassle: No account, no settings, no fuss. - Privacy: No data is collected or stored. Pro Year view With the Pro upgrade, you unlock access to the full year overview. Easily drag or manually enter days and weeks, and the app will automatically calculate the corresponding week numbers and dates. Perfect for project managers, planners, and anyone who needs to quickly and accurately consult week numbers. The upgrade is a one-time purchase. Perfect for students, project managers, planners, and anyone who wants to quickly find out what week number it is.

Screenshots

Shift Calendar4 screens
Weeknummer4 screens

Verdict

The call

The clearest difference is ads: Weeknummer at none against Shift Calendar's shown. Weeknummer also leads on update cadence (every 4 weeks vs every 3 months). Shift Calendar's advantage is iOS requirement (11.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Shift Calendar sells 4 one-off in-app purchases and Weeknummer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Shift Calendar ships an update every 3 months, Weeknummer every 4 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
Shift Calendar versus Weeknummer: the parameters behind the verdict, then further details
ParameterShift CalendarWeeknummer
PriceFreeFree
Rating4.2 (144 ratings) — better—
Positive reviews51.5% of reviews—
Number of ratings144 — better—
Update frequencyEvery 3 monthsEvery 4 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size27 MB23 MB
Age rating4+4+
Developer章健 杨Aizu Fon

Bugs and requests

Shift Calendar

Reported bugs

8 issues
  • One year old records are missing
  • Calendar does not always show the correct day
  • Data not included in backups
  • Recurring shifts require manual setup even in paid version
  • Full-length ads for multiple date additions
Show 3 more
  • Forced to watch ads to close
  • No option for 'no' for premium purchase prompts
  • Inability to write to the next day

Requested features

18 requests
  • Add hourly payment tracking
  • Add advance payment tracking
  • Add black theme (dark mode)
  • Increase character limit for shift names
  • Expand emoji usage for shifts
Show 13 more
  • Add ability to select multiple days for one entry (iOS)
  • Add save and restore feature (e.g., Dropbox)
  • Add widget support
  • Add option for military time or normal time
  • Add ability to add additional users
  • Add reminders for shifts
  • Sync to iOS calendar
  • Add ability to delete users
  • Add ability to delete incorrectly added user shifts
  • Add ability to write to the next day
  • Add statistics for hours worked
  • Add support for shift cycles longer than 31 days
  • Add ability to share schedule with family members

Weeknummer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Shift Calendar

One-time4
  • Calendar Notes$0.99
  • Remove Ads$0.99
  • Pro Version$0.99
Show 1 more
  • Add User$0.99
1 purchases

Weeknummer

One-time1
  • Jaaroverzicht Pro$0.99

Questions

Is Shift Calendar free?
Shift Calendar is free to download, with in-app purchases available.
Is Weeknummer free?
Weeknummer is free to download, with in-app purchases available.
Do Shift Calendar or Weeknummer have ads?
Shift Calendar shows ads; Weeknummer does not.
Which is updated more often, Shift Calendar or Weeknummer?
Shift Calendar ships an update every 3 months, and Weeknummer every 4 weeks. Most recently, Shift Calendar was updated on October 24, 2026 and Weeknummer on October 26, 2026.

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