Datum vs Color Date One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Color Date One
Customize your watch face with a highly visible date complication. Choose from various formats, adjust size, and personalize colors to match your style. Supports Japanese era names for a unique touch.
- Highly visible date complication
- Adjustable circular complication size
- Customizable date row colors
- Multiple date formats
- Japanese era name support
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Main Features 1. Highly visible date complication. 2. Circular complication is single element of weekday or day, which is adjustable in size. 3. Can set color of each date row using grid, slider, or color code. 4. Choose from 3 date formats, such as "year/month/day". 5. Compatible with Japanese era name. * Complications placed on colored dials are in monotone.
Screenshots
Verdict
The clearest difference is review sentiment: Datum at 100% against Color Date One's 0%. Datum also leads on device support (5 vs 3). Color Date One's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and monetization model 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
Datum costs $1.99 and Color Date One $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Datum ships an update every 3 months, Color Date One every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Datum | Color Date One |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac, Apple Watch, Vision Pro — better | iPhone, iPod, Apple Watch |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Lindinger | NAOTO UENO |
Customer experience
Datum
Color Date One
In-app purchases
Datum
No in-app purchases
Color Date One
No in-app purchases
