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 for macOS is now available:

* Acknowledges to Shanghai Astronomy Observatory for providing the 7Timer! API (, and CWB and NOAA for weather images (,, SOHO project ( for solar images.

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

About Altitude Correction:

App will apply altitude correction based on location's altitude. If you want to override default altitude correction, please add a new location and set the altitude manually. Set the altitude to 2000 to use 2KM altitude correction; Set the altitude to 7000 to use 7KM altitude correction.

Note: You need iOS 10 and later to upgrade to this version. Please upgrade to the latest iOS release to receive future app updates.

What’s New

Version 1.8.5

1. Now 7Timer data aware of location's altitude. It will automatically apply altitude correction based on altitude.
2. Fixed font color issue with today widgets under "Dark Mode" on iOS 13.


49.2 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Simplified Chinese

Age Rating
Rated 4+
© 2018


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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