Track lunar phases and events with a clean, minimalistic interface. Get quick access to moon information via a customizable home screen widget and receive timely reminders for new and full moons.
4.8(219 ratings)
FreeAds
Best apps like International Fixed Calendar
10+ similar apps compared and reviewed
4.4 avg rating
8 free apps
Updated July 2026
International Fixed Calendar is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to International Fixed Calendar
4.7(492 ratings)
FreeAdsIn-App Purchases
This app offers a powerful and precise calculator for everyday math and advanced scientific computations. It features a clean interface with large buttons, supporting complex equations, multiple modes, and intuitive input methods. Personalize your experience with colorful skins and custom icons.
5.0(4 ratings)
FreeIn-App Purchases
This app provides a world clock, allowing users to track time in multiple cities with customizable clock faces. It offers a gallery of designs and a subscription option for full access.
More apps like International Fixed Calendar
4
Julianator
Julian Day of Year Calculator
$0.99
$1.99 | 50% OFF
Easily convert dates between the Gregorian calendar and the Julian Day of Year (ordinal date). This tool is useful for systems that use day-of-year numbering, such as mainframes, military, and food industries. It offers a clean interface, monthly views, and widgets for quick access.
Gregorian to Julian Day of Year conversionJulian Day of Year to Gregorian conversionMonthly calendar view
🔧 Utilities
(109)
free5
MultiClock Civil/Solar/Metric
by Michael Olson
Free
This utility app displays time in multiple formats, including civil, solar, and metric. It offers a progress bar for the day's elapsed percentage and shows sunrise/sunset times. A converter tool allows for easy time conversions between different systems.
Civil time with DSTSolar time based on sun positionMetric time (10,000 units per day)
🔧 Utilities
(3)
free6
Local Sidereal Time
Local Sidereal Time
Free
This app calculates local sidereal time, a system astronomers use to locate celestial objects. It can also be used for personal development, with studies suggesting increased psychic abilities during specific sidereal times. The pro version offers advanced features like notifications and map-based calculations.
Calculate local sidereal timeAstronomy celestial object locationPotential psychic ability enhancement
🔧 Utilities
(1.1K)
free with in-app purchases7
Calculi: Scientific Calculator
Unit & Currency Conversion
Free
A smart and powerful calculator designed for ease of use, offering advanced scientific functions, unit and currency conversion, and a supercharged history tape. It adapts to various devices and supports external keyboards for enhanced functionality.
Complex expression solvingUnit conversion (17 categories)Currency conversion (30+ currencies)
🔧 Utilities
(374)
free with in-app purchases8
Network Speed Tester Client
by Lakehorn AG
Free
Measure your WiFi network's actual transfer speed with real-time graphical visualization. Optimize router placement and identify network bottlenecks for better performance. Requires a companion server application on your local network.
Measure WiFi transfer speedReal-time graphical visualizationOptimize router placement
🔧 Utilities
(10)
free9
Flat Earth Sun, Moon & Zodiac
Flat Earth Clock
$5.99
Explore celestial mechanics from an alternative perspective. Track the sun and moon's positions, observe daily and seasonal cycles, and access educational content. Connect with a community, discover books, and visualize concepts like circumnavigation on a flat earth model.
Sun and moon position tracking on AE mapDaily educational videos and archiveCommunity connection with messaging and calls
🔧 Utilities
(2.2K)
free with in-app purchases10
LSTclock: sidereal time clock
Local sidereal time clock
Free
This utility app displays local sidereal time for registered locations on iOS, iPadOS, and watchOS. It can also calculate sidereal time and Julian Date for any date and time, and sync locations between devices.
Local sidereal time displayJulian Date calculationSupports multiple registered locations
🔧 Utilities
(10)
free