# Local Sidereal Time — Local Sidereal Time

> Calculates local sidereal time for astronomy and personal development. (iPhone/iPad app by Scott Spiller.)

- Source: https://appshunter.io/ios/app/local-sidereal-time/id1256725300 (this page in markdown: same URL + `.md`)
- Developer: [Scott Spiller](https://appshunter.io/developer/1256725299)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.71/5 from 1,055 App Store ratings · 41 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 20 MB
- Released: 2017-07-20
- Data updated: 2026-09-02
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/local-sidereal-time/id1256725300/reviews.md

## What is Local Sidereal Time?

Sidereal helps you track local sidereal time from your current location or any place you want to check. It is designed for people interested in the 13:30 LST window discussed in remote-viewing literature, while also supporting any custom sidereal target you want to follow.

Use Sidereal to:

View a live local sidereal clock based on your current location
Calculate local sidereal time manually from longitude, date, and time
Search for a city or address and see the result with map support
Generate the next 31 upcoming hits for your selected sidereal target
Schedule the next 30 days of on-device alerts
Export future times to CSV and export events to your calendar
Customize your target LST, alert timing, full-window notifications, night viewing, and map visibility
Sidereal starts with 13:30 LST as the default target, but you can change it in Settings to track any local sidereal time. The app includes a trial, with Pro unlocking continued access to advanced tools and planning features.

## Key features

- Calculate local sidereal time
- Astronomy celestial object location
- Potential psychic ability enhancement
- Pro version notifications
- Pro version map-based calculation
- Pro version date/time conversion

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## What do users think of Local Sidereal Time?

Overall sentiment: positive

**Pros**

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

**Cons**

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

**Commonly reported bugs**

- Alarm doesn't work
- Crashes when loading
- Notification issues
- Pro purchase restoration not working

**Most requested features**

- Add alarm feature
- Allow setting location manually
- Improve notification handling
- Automatically adjust for daylight saving time

## Recent user reviews (10 of 41)

All indexed reviews: https://appshunter.io/ios/app/local-sidereal-time/id1256725300/reviews.md

### 5/5 — Love it!

*2024-08-13, version 3.5*

So easy. Love it!

### 5/5 — Used it for many years. Great App

*2024-04-11, version 3.5*

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.

### 3/5 — Alarm Doesn’t Work

*2024-02-27, version 3.5*

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!

### 5/5 — Gotta have this app , so modern

*2023-12-22, version 3.5*

Remember the old days, before the internet, before cell phones, when time was synchronized with the WWV radio. And sidereal time was calculated with your HP calculator? The one with RPN (Reverse Polish Notation).  Gone with the wind.  Now it’s easier than falling off a log.

### 1/5 — Pro Purchase problems

*2023-08-25, version 3.5*

Purchased pro version. Had to reset phone. App has an option to restore pro purchase I’d already paid if the app needs to be reinstalled on a device. It did not work.

### 5/5 — Useful

*2023-01-03, version 3.5*

Meets my needs.

### 1/5 — Didn’t work

*2022-11-22, version 3.4*

Kept crashing while trying to load

### 5/5 — Notification’s

*2022-09-04, version 3.4*

You can’t clear old notifications unless you completely turn them off what a pain

### 5/5 — Perfect

*2022-07-28*

It’s very simple but just what I need.

### 1/5 — What do you get with a purchase of this app?

*2022-04-13, version 3.4*

I’m trying to figure out what this app does?  It’s unclear in the notes and quite honestly I think that you could price this app at a more affordable price with a better description of the advantages of 13:30 time.  Just saying.

## Frequently asked questions about Local Sidereal Time

### What is local sidereal time and how is it used?

Local sidereal time is a timekeeping system used by astronomers to accurately locate celestial objects in the night sky. It is based on Earth's rotation relative to the fixed stars or the March equinox, allowing for precise pointing of telescopes.

### What are the benefits of using this app for personal development?

Studies suggest that certain local sidereal times, specifically around 13:30 LST, may increase psychic abilities and remote viewing skills by up to 400%. The app can help users track these times for meditation or personal exploration.

### What features are available in the pro version?

The pro version offers advanced functionalities such as receiving notifications for specific sidereal times (e.g., 13:30 LST), planning future meditations by accessing upcoming 13:30 LST times, calculating sidereal time by address, latitude, and longitude, and converting current dates and times to sidereal time. It also allows users to touch anywhere on a world map to find the local sidereal time.

### Is this app compatible with my device?

While the description does not specify exact compatibility, this app is designed for mobile devices. Users should check their device's app store for specific operating system requirements (e.g., iOS or Android versions).

### How can I find the local sidereal time for a specific location?

The app calculates local sidereal time based on your current location. With the pro version, you can also calculate sidereal time by entering an address, latitude, and longitude, or by touching any point on an interactive world map.

## Version history (last 5 releases)

### 4.2 — 2026-05-01

Added Home Screen and Lock Screen widgets so you can see your local sidereal time at a glance.
Improved widget updates so the time stays fresh throughout the day.
Refined the widget experience for quicker, easier viewing without opening the app.

### 4.1 — 2026-04-19

Improved alert reliability and notification refresh behavior
Alerts now refresh automatically while you use the app
Added pull-to-refresh on the Alerts screen
Saved LST time now updates only after you finish choosing it
Simplified alert settings and removed the full-window alert option
Additional Apple Watch reminder improvements and cleanup

### 3.5 — 2022-12-13

Bug fixes and general maintenance.

### 3.4 — 2022-02-26

Added a privacy policy link on the contact us page.  Fix bugs.

### 3.2 — 2021-10-18

Fixed a bug with the app badge notification icon number always showing 1.

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## More apps by Scott Spiller

- [Sidereal Watch](https://appshunter.io/ios/app/sidereal-watch/id6762098868)

All apps by Scott Spiller: https://appshunter.io/developer/1256725299

## Related topics

[sidereal time](https://appshunter.io/ios/topics/sidereal-time) · [local sidereal time](https://appshunter.io/ios/topics/local-sidereal-time)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*