Comparison

shift calendar pro vs Datum

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

Head to head
About

shift calendar pro

Manage your work schedule with a dedicated calendar app. It generates your shifts for the entire year based on your roster and start date. Easily edit individual days, mark holidays, and view public holidays and school vacations for over 30 countries.

Highlights
  • Work shift calendar generation
  • Customizable shift sequences
  • Edit individual days
  • Mark holidays
  • Public holiday tracking
  • School vacation tracking
Features
Currently charting
Read full description

A calendar with all your work shifts. Works with any number of shifts and every roster. Just enter the shift sequence and a start date. The app generates a calendar showing the work shifts for each day in the year. You can edit single days to change shifts or mark them as holidays. Shift calendar marks public holidays and school vacations for more than 30 countries.

About

Datum

A minimalist calendar application designed for Apple devices, offering a clean interface and customizable widgets for iOS, macOS, and watchOS. View upcoming events, daily schedules, and monthly overviews directly from your home screen or watch face.

Highlights
  • Minimalist calendar interface
  • Lockscreen widgets for iOS
  • Event display widgets
  • Calendar widgets with event marks
  • watchOS calendar and complications
  • Support for iPhone, iPad, Mac, and Apple Watch
Features
Read full description

Datum is a minimalistic iOS, watchOS, macOS and visionOS calendar app. For iOS there are Lockscreen Widgets that show you the current date and there are Lockscreen Widgets that show up to 3 events for today. The iOS and macOS apps include the following widgets: - a small widget that shows the current date and at the bottom the events for this day - a small widget that shows a calendar with up to 3 event marks for each day - a medium widget that shows the same as the first small widget and on the right side a calendar with up to 3 event marks for each day - a large widget that shows the same as the medium widget and a list of the upcoming events - a extra large widget that shows a calendar and a list of the upcoming events (only for iPadOS 15+) The watchOS app shows a calendar with up to 3 event marks for each day. You can switch to the next/previous month by tapping on the arrows at the bottom of the calendar. You can view all events for each day by tapping on a day. There are also complications for all watchfaces included that show you the current date.

Screenshots

shift calendar pro3 screens
Datum3 screens

Verdict

The call

The clearest difference is review sentiment: Datum at 100% against shift calendar pro's 62%. Datum also leads on in-app purchases (none vs 2) and device support (5 vs 3). shift calendar pro's advantage is chart position (#165 vs unranked) and iOS requirement (12.0 vs 17.6). On price, update cadence and ads 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

shift calendar pro costs $1.99 and Datum $1.99 up front. shift calendar pro sells 2 one-off in-app purchases. Datum asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 5 level
shift calendar pro versus Datum: the parameters behind the verdict, then further details
Parametershift calendar proDatum
Price$1.99$1.99
Rating4.3 (20 ratings) — better—
Positive reviews61.5% of reviews100.0% of reviews — better
Number of ratings20 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#165 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch, Vision Pro — better
Requires iOS12.0 — better17.6
Further details — not scored
Size12 MB15 MB
Age rating4+4+
DeveloperAlex GugelMichael Lindinger

Customer experience

shift calendar pro

All ratings20 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews286 reviews
Positive61.5%
Neutral10.8%
Negative27.6%

Datum

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

shift calendar pro

Reported bugs

10 issues
  • Calendar shifts by a month
  • Holidays and school breaks not displayed
  • App crashes or won't open on certain iOS versions
  • PDF export function not working
  • Calendar data corruption
Show 5 more
  • Syncing with iOS Calendar not working
  • Lost all appointments/data
  • Widget functionality missing
  • Interface not matching app store screenshots
  • Delete button issues reported

Requested features

15 requests
  • Add widget functionality
  • Mark holidays and school breaks
  • More color options for shifts
  • Add option for multiple shift profiles
  • Improve scrolling for faster navigation
Show 10 more
  • Integrate with iPad calendar
  • Sync with iOS Calendar
  • Add notes/appointments to calendar
  • Improve PDF export functionality
  • Allow adding more than 5 shifts
  • Option to archive multiple shift plans
  • Add ability to split boxes for different rosters
  • Update for newer iOS versions
  • Improve interface for newer screens
  • Add dark mode option

Datum

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

shift calendar pro

One-time2
  • Create PDF calendar$0.99
  • Copy data to Calendar app$0.99
None

Datum

No in-app purchases

Questions

Is shift calendar pro free?
shift calendar pro costs $1.99, and also offers in-app purchases.
Is Datum free?
Datum costs $1.99, with no in-app purchases.
Do shift calendar pro or Datum have ads?
Neither shift calendar pro nor Datum shows ads.
Which is updated more often, shift calendar pro or Datum?
shift calendar pro ships an update every 3 months, and Datum every 3 months. Most recently, shift calendar pro was updated on October 30, 2026 and Datum on October 24, 2026.

Other comparisons