# shift calendar pro vs Datum

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 iOS requirement (12.0 vs 17.6). On price, update cadence and ads there is nothing between them.

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.

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

## The numbers

| Metric | shift calendar pro | Datum |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[4.3 (20 ratings)](https://appshunter.io/ios/app/shift-calendar-pro/id410821142/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 61.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 12 MB | 15 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Alex Gugel](https://appshunter.io/developer/396118919) | [Michael Lindinger](https://appshunter.io/developer/1431086653) |

## What reviewers say

### shift calendar pro

[App page](https://appshunter.io/ios/app/shift-calendar-pro/id410821142)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Create PDF calendar | $0.99 | one-time |
| Copy data to Calendar app | $0.99 | one-time |

**What reviewers like**

- 👍 Easy to program shift cycles
- 👍 Simple and intuitive to use
- 👍 Great for planning ahead
- 👍 Handles complex shift patterns
- 👍 Customizable color coding

**What reviewers complain about**

- 🐛 Month shifting bug
- 🐛 Missing widget function
- 🐛 Holidays not marked
- 🐛 Interface issues reported
- 🐛 Limited color options

**Reported bugs**

- 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

**Requested features**

- Add widget functionality
- Mark holidays and school breaks
- More color options for shifts
- Add option for multiple shift profiles
- Improve scrolling for faster navigation


### Datum

[App page](https://appshunter.io/ios/app/datum-calendar/id1552646317)

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:** Apple Watch app

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*