# Date Memos vs Datum

The clearest difference is price: Date Memos at $0.99 against Datum's $1.99. Datum's advantage is iOS requirement (17.6 vs 27.0). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Date Memos costs $0.99 and Datum $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Date Memos ships an update every 2 months, Datum every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Date Memos | Datum |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/date-memos/id1505321119/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 10 MB | 15 MB |
| Requires iOS | 27.0 | **17.6** |
| Devices | iPhone, iPad, Mac, Apple Watch, Vision Pro | iPhone, iPad, Mac, Apple Watch, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [泽新 李](https://appshunter.io/developer/1502283048) | [Michael Lindinger](https://appshunter.io/developer/1431086653) |

## What reviewers say

### Date Memos

[App page](https://appshunter.io/ios/app/date-memos/id1505321119)

Never forget important dates with this app. It supports both solar and lunar calendars, allows for custom reminders, and syncs across all your Apple devices. Pin key events to widgets for quick access.

**Highlights:** Solar and lunar calendar support, Customizable event reminders, Cross-device iCloud sync, Widget support with pinned events, Dark mode, iMessage app for sharing events

**Features:** Apple Watch app, iMessage stickers

**In-app purchases:** none


### 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 Date Memos free?

Date Memos costs $0.99, with no in-app purchases.

### Is Datum free?

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

### Do Date Memos or Datum have ads?

Neither Date Memos nor Datum shows ads.

### Which is updated more often, Date Memos or Datum?

Date Memos ships an update every 2 months, and Datum every 3 months. Most recently, Date Memos was updated on November 3, 2026 and Datum on November 3, 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.*