LSTclock: sidereal time clock 4+
Local sidereal time clock
Tsuyoshi Sawada
Designed for iPad
-
- Free
Screenshots
Description
LSTclock is an iOS/iPadOS/watchOS app to display the local sidereal time (LST) at the selected location(s). On iOS/iPadOS, it can also calculate the LST and the Julian Date for arbitrary date/time. The app contents (location list) can be synced between iPhone and paired Apple Watch(es).
What’s New
Version 8.4
- Modified widgets and complications in some sizes to reflect the "Show JD/MJD" (iOS/iPadOS) and "Display Item" (watchOS) preferences. As a side effect, these settings are reset to the default values upon the update of the app and you will have to set them again (sorry for the inconveniences).
- Bug fixes and UI tweaks.
Ratings and Reviews
Extreme minimalism
The app works but I can’t seem to get the Lock Screen widget to show the LST. It shows a time when selecting the widget as a preview, but not on the active Lock Screen widget itself. I’ve tried all the privacy/notification settings I could find, updated iOS and reinstalled. The app doesn’t show up in some lists where other app settings would appear.
Almost; but, not quite.
Astronomers often need to use standard and local sidereal time which is done in the app; but more importantly for record keeping, they also need Julian and Modified Julian Dates. The app does not show JD or MJD and really needs to do this to be useful and bumped from three to five stars. Having to go to settings for time (which is not self explanatory) in order to get the JD and MJD is a pain. Just display both under the LST.
Hope the developer takes this under advisement.
14 December 2024 UPDATE: Tsuyoshi Sawada quickly responded with a note through the Apple App store that he added an optional setting to switch on or off the JD/MJD in his LSTClock and I tested it this evening when making my observations. It is a perfect solution to a long term issue that I have struggled with in my work having to look things up and compute JD and MJD with online calculators. Tsuyoshi, your solution is perfect! Thank you for responding so quickly and as promised, your app is not rated ⭐️⭐️⭐️⭐️⭐️ and more. Thank you so very much!
Developer Response ,
Thank you for the suggestion, I added an option to show JD/MJD in version 8.3.
Small bugs but unique in function
There seems to be a bug in how the Watch app enumerates complications, and took a few restarts and resets before I could get everything just right, but this app is unique in that you can get sidereal time with just your longitude and display it on the watch face.
App Privacy
The developer, Tsuyoshi Sawada, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- Tsuyoshi Sawada
- Size
- 4.3 MB
- Category
- Utilities
- Compatibility
-
- iPhone
- Requires iOS 16.0 or later.
- iPad
- Requires iPadOS 16.0 or later.
- Mac
- Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- Apple Watch
- Requires watchOS 9.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
-
English
- Age Rating
- 4+
- Copyright
- © 2020-2025 tanusouth.com
- Price
- Free