# Datum vs YearRound

The clearest difference is price: YearRound at Free against Datum's $1.99. Datum's advantage is in-app purchases (none vs 4) and update cadence (every 3 months vs every 6 months). On ads and iOS requirement there is nothing between them.

YearRound is free to download; Datum costs $1.99 up front. YearRound sells 4 one-off in-app purchases. Datum asks for nothing beyond the download.

Datum ships an update every 3 months, YearRound every 6 months. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Datum | YearRound |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Paid | — |
| Size | 11 MB | 6 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Michael Lindinger](https://appshunter.io/developer/1431086653) | [ShiftVision](https://appshunter.io/developer/597858653) |

## What reviewers say

### 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


### YearRound

[App page](https://appshunter.io/ios/app/yearround/id6458589035)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2024 Poster | $0.99 | one-time |
| 2023 Poster | $0.99 | one-time |
| 2026 Poster | $4.99 | one-time |
| 2025 Poster | $4.99 | one-time |


## Frequently asked questions

### Is Datum free?

Datum costs $1.99, with no in-app purchases.

### Is YearRound free?

YearRound is free to download, with in-app purchases available.

### Do Datum or YearRound have ads?

Neither Datum nor YearRound shows ads.

### Which is updated more often, Datum or YearRound?

Datum ships an update every 3 months, and YearRound every 6 months. Most recently, Datum was updated on September 7, 2026 and YearRound on September 14, 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.*