Best apps like LSTclock: sidereal time clock

10+ similar apps compared and reviewed

4.2 avg rating

9 free apps

Updated October 2026

LSTclock: sidereal time clock

Tsuyoshi Sawada

Looking for something like LSTclock? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to LSTclock

#1

Local Sidereal Time by Scott Spiller

Local Sidereal Time

Editor's Choice

4.7😊(1.1K ratings)

FreeIn-App Purchases

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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.

What We Love

👍 Easy to use
🚀 Useful app
💡 Helpful notifications
👍 Great customer service
💡 Excellent tool

Room to Improve

🐛 Alarm doesn't work
🐛 Crashes frequently
🔒 Pro purchase issues
🐛 Notification issues

#2

Desktop Astro Clock by BEHR Consulting International

Julian, Sidereal and the Moon

Strong Contender

3.7(3 ratings)

Free

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This utility app displays time in various formats, including Julian, Sidereal, and GMT. It offers always-on display options, moon and meteor shower information, and customizable clock configurations. Widgets and a watchOS app are also supported for enhanced functionality.

#3

Custom Word Clock - TextTime by Daniel Gauthier

Numbers are so last year

Worth Considering

5.0(4 ratings)

FreeAdsIn-App Purchases

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This app offers a unique way to tell time using words instead of numbers. Customize phrases, colors, and fonts to create a personalized word-based clock widget for your device's home or lock screen.

More apps like LSTclock

MultiClock Civil/Solar/Metric

MultiClock Civil/Solar/Metric

MultiClock Civil/Solar/Metric

by Michael Olson

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)

Compare with LSTclock

NINA Remote Controller

Control your astrophotography sessions remotely from your mobile device or Mac. Manage imaging, focus, guiding, and polar alignment. This open-source tool enhances your workflow without ads or in-app purchases.

Remote imaging session launchFocus controlGuiding performance monitoring

Compare with LSTclock

Binary Clock by jhale.dev

Binary Clock by jhale.dev

Binary Clock by jhale.dev

This utility displays time using binary code, representing numbers with illuminated dots. It offers personalization options and includes instructions for reading the binary time format. The application is open-source.

Binary time displayCustomizable settingsInstructions for binary time

Compare with LSTclock

@Beat: Internet time

@Beat: Internet time

@Beat: Internet time

Universal time for cyberspace

This app displays and converts Swatch Internet Time (.beat time) across your Apple devices. It allows you to set alarms and notifications based on this unique time system, which divides the day into 1000 beats.

Display .beat timeConvert local time to .beat timeConvert .beat time to local time

Compare with LSTclock

iOptron Commander (iOS)

iOptron Commander (iOS)

iOptron Commander (iOS)

iOptron mount control utility

Control your iOptron telescope mount remotely using your iOS device. This utility allows for basic functions like slewing to celestial objects, syncing time and location, and managing compatible mount series.

Remote telescope mount controlSlew to stars and deepsky objectsSync time and site from iOS

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How much daylight is left?

Track remaining daylight and receive sunset notifications. Explore solar data globally, compare locations, and generate reports. Calculate distances to the Equator and poles.

Real-time sunset timeSunset notificationsGlobal sunrise/sunset monitoring

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Julian Day of Year Calculator

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

Compare with LSTclock