Amateur Astronomers' Weather App and Toolkit

Haru Screenshot

Haru App is a must-have utility for pro and amateur astronomers. It includes detailed weather information for plan observations and other cool features.

7Timer! is an important part of the app. It provides weather information that is related to astronomy. The forecast range is 3 days and include informations about cloud cover, astronomical seeing and atmospheric transparency, etc.

This app currently forcus on:

  • 7Timer! weather forecast
  • Weather images for East Asia area
  • Weather images for U.S.
  • SOHO Viewer
  • Make and share GIF animation for solar images and weather images
  • Share GIF animations as video
  • “Sun Position” Today Widget
  • “Lunar Phase” Today Widget

(Note: Make GIF need to download a certain amount of pictures. If you are under cellular network, or charged by data usage, you may consider make GIF later.)

More features and handy funcionalities for amateur astronomers are comming, stay tuned.

** Haru(晴、はる) means clear day in Japanese.

Version History:

1.7.5 (2018-3-20)
  1. SOHO Viewer is partly recovered.
  2. Other fixes.
1.7.4 (2018-3-15)
  1. Fixed lunar illumination crop issue.
  2. Fixed image viewer paging title issue.
1.7.3 (2018-2-28)
  1. Added arrow button for easier navigating through weather images.
  2. Show a message while getting user's location in Sun Position and Lunar Phase widget.
1.7.2 (2018-2-18)
  1. Fixed moon set time issue related with timezone.
  2. Fixed moon phase name error.
1.7.1 (2018-2-14)
  • Fixed "Lunar Phase" widget moon set time sometimes not shown correctly issue.
1.7 (2018-2-10)
  1. New: "Lunar Phase" today widget.
  2. Bug fixes.
1.6 (2018-1-31)
  • Added alternative realtime solar image service during SOHO maintenance.
1.5 (2018-1-24)
  1. New "Sun Position" Today Widget. You can get a feeling of the sun even in cloudy days.
  2. Now you can share GIF animation as a Video or save to your Camera Roll.
  3. Added more control on how GIF animation can be created.
  4. Fixed a bug that cause some GIF not able to share.
  5. Other tweaks and improvements.
1.4 (2018-1-23)
  1. Make GIF from SOHO View and Satellite Images. Cheers!
  2. Bug fixes and detail improvements.
1.3 (2018-1-18)
  1. Time on 7Timers now in local time.
  2. Added weather satellite images for U.S.
  3. Added near real time solar images from SOHO project.
  4. Many detail refinements and bug fixes.
1.2 (2018-1-16)
  1. Added real time sun position.
  2. Added temperature curve to make temperature change more comprehensive.
  3. Temperature now can be shown in Fahrenheit value.
1.1 (2018-1-12)
  1. Re-write the weather forecast UI.
  2. Added sunrise and sunset time for all your favorite locations.
  3. Share locally rendered super sharp weather forecast image .
  4. A lot of tweaks and bug fixes.
1.0 (2018-1-10)
  1. First release.