Local Sidereal Time

Name: Local Sidereal Time
Rating: 4.7 (1055 reviews)
Author: Scott Spiller

By: Scott Spiller

Local Sidereal Time

Features & Capabilities

Local Sidereal Time provides a live LST clock based on your location or any chosen place. Track the local sidereal time, generate the next 31 hits for your selected sidereal target, and search for cities with map support. The default target is 13:30 LST, but you can customize it to track any local sidereal time.

On-device tools include 30 days of alerts, CSV exports, and calendar exports. Enjoy home screen and lock screen widgets for a quick glance, night viewing modes, and map visibility controls. The app offers a trial with Pro unlocking continued access to advanced tools and planning features.

User Growth & Download Statistics

App Education Navigation & Mapping Calendar Data

By:

Scott Spiller

Rating:

4.70

(1,055) 1 new ratings

Version:

4.2 Last updated: 2026-05-01

Version code:

885165195

Creation date:

2017-07-20

Compatible devices:

Size:

20.05MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-10

Compare stats and ranking:

Ranking

# 56,720 ▲ 31

Other platforms

Sidereal Time App (v4.2.04)

14,774 4.34

(278)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Scott Spiller

Apple Apps Store

https://apps.apple.com/us/app/local-sidereal-time/id1256725300

Website:

https://sidereal.app

User Reviews

Users praise Local Sidereal Time for being easy to use and for delivering accurate LST times, helpful reminders, and informative articles. The standout pros are its simplicity, useful pro features, and helpful pop-up alerts for planning. However, repeated concerns include alarms that don’t ring or trigger, inconsistent notification behavior (missing sounds, hidden alerts, or difficulty clearing), licensing/restoration problems after upgrading, and occasional stability issues (crashes or slow loading). Overall, when it works, it’s valuable, with strong developer responsiveness noted by some, but several reliability issues limit consistent use.

Pros

Easy to use and meets sidereal timing needs.
Pro upgrade is worth it; I’m happy paying for pro features and the developer is responsive.
Pop-up reminders and notifications are helpful for planning around 13:30 LST.
Informative articles about sidereal time.

Cons

Alarm feature not working: alarms do not ring or trigger on devices, and notifications may fail.
Pro upgrade/restore issues: purchasing the Pro version doesn’t always restore after reinstall, leading to licensing frustration.
Notifications not reliably visible or audible: some alerts don’t appear, cannot be cleared, or are hard to locate.
Stability and performance problems: occasional crashes and slow loading.

Recent reviews

So easy. Love it!

by Je*****, 2024-08-13

I love this app. I use it every day. It’s a shame that the alarm feature stopped working a few years ago. But since sidereal time only changes four-minutes a day, it’s easy to kind of remember. I would happily pay the $4.99 again to get the alarms working.

by Ma*****, 2024-04-11

First off, this app is a great idea. I love the ability to track and plan around optimum sidereal times. I just wish the alarm feature would work. I wake up to find the notification in there on my screen, but no noise or notification to my watch, even though I’ve allowed them to come through my sleep focus settings. Also, it would be great if the “Contact Us” function didn’t require me to setup the canned email client on my iPhone in order to email the developer. I don’t want to do that and since there was no way to get the email address that I could find, I’m forced to leave a review in the hope that the developer reads my concerns here. It might sound like I’m unhappy with this app. Far from it. These are just areas of improvement I see. Thank you!