Relativity Calendar vs Color Date Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Relativity Calendar
This app redefines how you view dates by allowing you to express any day relative to any month. See custom dates like 'May 32nd' or 'March 93rd' at a glance. It offers home screen widgets and Apple Watch complications for easy access.
- Express dates relative to any month
- Home screen widgets with color customization
- Apple Watch complications
- iOS 16 Lock Screen widgets
- Track custom dates and holidays
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Relativity Calendar is an app that tells you what day it is, relative to any month. For example, June 1st can also be written as May 32nd or March 93rd. Set any month you want, and you'll be able to see it at a glance in your widgets and Apple Watch! Whether it's the month of your birth, an important holiday, or Truck Month, Relativity Calendar will (more or less) help you keep track. Features: - Pick any month, even if it doesn't make sense. Especially if it doesn't make sense. - Full support for home screen widgets, with full color customization - Full support for Apple Watch, including complications - Supports iOS 16 Lock Screen widgets.
Color Date Plus
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Main Features 1. Highly visible date complication 2. Calendar display (3 months including before and after) when tapped 3. Can set color of each date row using grid, slider, or color code 4. Circular complications can have their background color set 5. Rectangular complications can have their font size and font design set 6. Compatible with Japanese era name (Except for rectangule) *1 Complications placed on colored dials are in monotone.(Background color cannot be set) *2 If display issue on colored dials, please enable the "Colored Dial" toggle button *3 Please set font size for rectangular complications to the appropriate value using slider *4 The outer part of the corner complication has limited character storage, so the text may not fit
Screenshots
Verdict
The clearest difference is price: Relativity Calendar at Free against Color Date Plus's $1.99. Color Date Plus's advantage is update cadence (every 10 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement 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
Relativity Calendar is free to download; Color Date Plus costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Relativity Calendar ships an update every 2 months, Color Date Plus every 10 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.
| Parameter | Relativity Calendar | Color Date Plus |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (17 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Cole | NAOTO UENO |
In-app purchases
Relativity Calendar
No in-app purchases
Color Date Plus
No in-app purchases
Questions
Is Relativity Calendar free?
Is Color Date Plus free?
Do Relativity Calendar or Color Date Plus have ads?
Which is updated more often, Relativity Calendar or Color Date Plus?
Other comparisons
