Best Relativity Calendar alternatives: apps like Relativity Calendar

10+ similar apps compared and reviewed

3.5 avg rating
4 free apps
Updated November 2026

Whether you want more options like Relativity Calendar or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Relativity Calendar

0.0(0 ratings)
$0.99
Date.Time Calculator screenshot 1
Date.Time Calculator screenshot 2
Date.Time Calculator screenshot 3
Date.Time Calculator screenshot 4

Calculate date and time differences, intervals, and perform unit conversions with a pure calculator interface. Useful for determining future or past dates, calculating total time for multiple events, and converting between various time units and POSIX time.

CleanURL for Safari#2

CleanURL for Safari by hkitago

Remove tracking from URLs
Strong Contender
🔧 Utilities
0.0(0 ratings)
$1.99
CleanURL for Safari screenshot 1
CleanURL for Safari screenshot 2
CleanURL for Safari screenshot 3

This Safari extension automatically cleans URLs by removing tracking parameters, creating shorter, more shareable links. It offers customization to tailor the removal of parameters to your specific needs, enhancing privacy in the background.

Color Date One#3

Color Date One by NAOTO UENO

High Visibility Date/ One Item
Worth Considering
🔧 Utilities
1.0(1 ratings)
$1.99

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.

More apps like Relativity Calendar

4
Date Calculator ±
Date Calculator ±
Date Calculator ±
Calculate dates and durations
Free
🔧 Utilities
(0)
5
AmberDate - Date Calculator
AmberDate - Date Calculator
AmberDate - Date Calculator
Track Days & Time Intervals
Free

Easily calculate future dates and time intervals with a clean, intuitive interface. Features smart shortcuts, a scroll wheel picker, and one-tap copying for quick results. Ideal for planning projects, travel, or visa timelines.

Calculate future datesAdd days, weeks, or monthsSmart shortcuts for quick calculations
🔧 Utilities
(2)
free
6
DayNumCalc
DayNumCalc
DayNumCalc
Day number & date calculations
$0.99

This utility app provides quick access to date calculations, including finding the day number for any date, determining a date from a day number, calculating the difference between two dates, and checking the day of the week. It also offers widgets for convenient access on your home and lock screens.

Calculate day number from dateDetermine date from day numberCalculate days between two dates
🔧 Utilities
(6)
paid
7
Color Date Plus
Color Date Plus
Color Date Plus
High Visibility Date / Upgrade
$1.99
🔧 Utilities
(0)
8
Datum - Calendar
Datum - Calendar
Datum - Calendar
+ Widget
$1.99

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 interfaceLockscreen widgets for iOSEvent display widgets
🔧 Utilities
(0)
paid
9
Rivnly for Rivian
Rivnly for Rivian
Rivnly for Rivian
Rivian drive & charge tracker
Free

Track your electric vehicle's battery, range, and charging sessions. Monitor climate controls, tire pressure, and drive history with detailed charts and notifications. Explore features with a demo mode before connecting your account.

Live battery and range monitoringClimate control and vehicle statusDetailed drive history with route maps
🔧 Utilities
(2)
free
10
Time & Date
Time & Date
Time & Date
Industrial style daily planner
Free
🔧 Utilities
(0)