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Best Local Sidereal Time Apps

250+ iOS apps curated and reviewed

3.7 avg rating
17 free apps
Updated September 2026

Every iPhone needs a few good local sidereal time apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Local Sidereal Time Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Local Sidereal TimeLocal Sidereal TimeFree4.7★ (1.1K)NoYesOct 2026
2LSTclock: sidereal time clockLSTclock: sidereal time clockFree3.8★ (10)NoNoJul 2026
3Sky TimeSky TimeFree4.2★ (17)NoNoSep 2026
4Sidereal WatchSidereal Watch$2.99—NoNoSep 2026
5Desktop Astro ClockDesktop Astro ClockFree3.7★ (3)NoNoMay 2026
6Swatch TimeSwatch TimeFree—NoNoMay 2026
7World Clock – Time ZoneWorld Clock – Time ZoneFree1.0★ (1)NoNoJul 2026
8Time Zone Lookup +Time Zone Lookup +Free——NoAug 2026

Top Picks for Local Sidereal Time

Local Sidereal Time#1

Local Sidereal Time by Scott Spiller

Local Sidereal Time
Editor's Choice
🔧 Utilities
4.7😊(1.1K ratings)
FreeIn-App Purchases
Local Sidereal Time screenshot 1
Local Sidereal Time screenshot 2
Local Sidereal Time screenshot 3
Local Sidereal Time screenshot 4
Local Sidereal Time screenshot 5

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
Sky Time#3

Sky Time by John Kennedy

Worth Considering
🔍 Reference
4.2(17 ratings)
Free
Sky Time screenshot 1
Sky Time screenshot 2
Sky Time screenshot 3

This app provides essential astronomy-related time data, including Julian Date, Universal Time, and Sidereal Time calculated using your device's location. It features a night-vision friendly red display and pop-up descriptions for easy understanding.

More Local Sidereal Time apps to explore

FAQ about Local Sidereal Time

What are the best local sidereal time apps for iPhone?
Local Sidereal Time tops our local sidereal time apps ranking as of September 2026, with a 4.7-star average from 1.1K App Store ratings, and it's free to download.
Yes — 17 of the top local sidereal time apps we rank are free to download, including Local Sidereal Time and LSTclock: sidereal time clock.
Local Sidereal Time has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ local sidereal time apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.