# Haru - Astronomers' Toolkit — Plan observations with ease.

> Plan observations with ease. (iPhone/iPad app by 文杰 朱.)

- Source: https://appshunter.io/ios/app/haru-astronomers-toolkit/id1270663271 (this page in markdown: same URL + `.md`)
- Developer: [文杰 朱](https://appshunter.io/developer/438042072)
- Category: Weather, Utilities
- Price: $0.49 (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 15.0 · 15 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2018-01-09
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/haru-astronomers-toolkit/id1270663271/reviews.md

## What is Haru?

Haru is a practical tool that every astronomy enthusiast should have. 7Timers! mainly provides weather forecasts designed for astronomical use. The forecast covers up to 3 days and includes parameters that astronomers care about, such as seeing and transparency.

In addition to the 7Timers! feature, the app also provides a variety of useful information.

Current main features include:

- 7Timers!
- East Asia satellite cloud imagery
- United States satellite cloud imagery
- Real-time solar images
- “Sun Position” Notification Center widget (fully redesigned)
- “Moon Phase” Notification Center widget (fully redesigned)
- Create and share GIF animations from satellite images and solar images (You can also convert the GIF animations into videos for sharing.)

Note: Creating GIF animations requires downloading a relatively large number of files. If you are using cellular data or a metered connection, please pay attention to data usage when viewing GIF animations.

Haru for macOS has been discontinued. Haru will be updated to a Universal App in the future. Please stay tuned.

More useful features for astronomy enthusiasts will be added in future updates. Stay tuned!

Acknowledgements:

* Thanks to Shanghai Astronomical Observatory for information service support (http://www.astron.ac.cn).
* Thanks to CWB and NOAA for providing satellite cloud imagery (http://www.cwb.gov.tw, https://www.noaa.gov).
* Thanks to SOHO for providing solar images (https://sohowww.nascom.nasa.gov).

About altitude correction for 7Timers! data:

The app automatically applies altitude correction based on the elevation of your location. If you need to override the default correction, please add a new location and manually enter the altitude. For 2 km correction, set the altitude to 2000 m. For 7 km correction, set the altitude to 7000 m.

Note: Starting from this update, Haru no longer supports iOS versions earlier than iOS 17. If you would like to continue receiving updates, please upgrade your device to the latest version of iOS.


## Version history (last 5 releases)

### 1.9.3 — 2026-03-31

What's new in this update:
1. Added all-new forecast widgets. View 7timer! forecast directly on your Home Screen without opening the app.
2. Fixed an issue where the Tab Bar did not display correctly in Dark Mode.

Recent Updates:
1. Added support for Japanese and Traditional Chinese
2. Added color-coded temperature display
3. Improved smoothing of the temperature curve
4. Optimized weather forecast layout in landscape mode on iPhone
5. Optimized weather forecast layout on large-screen iPads
6. Fixed an issue where images were forced into portrait mode on iPhone
7. Fixed an issue where images became misaligned when rotating on iPad
8. Uses a new image viewer component
9. Adds support for iOS 26
10. Newly redesigned “Sun Position” and “Moon Phase” widgets
11. Fixed am issue with 7Timers! not automatic refresh after change city.

### 1.9.2 — 2026-03-19

What's new in this update:
1. Added support for Traditional Chinese
2. Added color-coded temperature display
3. Improved smoothing of the temperature curve
4. Optimized weather forecast layout in landscape mode on iPhone
5. Optimized weather forecast layout on large-screen iPads
6. Fixed an issue where images were forced into portrait mode on iPhone
7. Fixed an issue where images became misaligned when rotating on iPad

Recent Updates:
1. Uses a new image viewer component
2. Adds support for iOS 26
3. Newly redesigned “Sun Position” and “Moon Phase” widgets
4. Support Japanese Language
5. Fixed am issue with 7Timers! not automatic refresh after change city.

### 1.9.1 — 2026-03-19

What's new in this update:
- Fixed am issue with 7Timers! not automatic refresh after change city.

Recent Updates:
1. Uses a new image viewer component
2. Adds support for iOS 26
3. Newly redesigned “Sun Position” and “Moon Phase” widgets
4. Support Japanese Language

### 1.9.0 — 2026-03-12

New in this update:
1. Uses a new image viewer component
2. Adds support for iOS 26
3. Newly redesigned “Sun Position” and “Moon Phase” widgets
4. Support Japanese Language

### 1.8.9 — 2024-05-08

This update fixes an issue with loading East Asia weather images.

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## More apps by 文杰 朱

- [FrameForge Go](https://appshunter.io/ios/app/frameforge-go/id6761034567)

All apps by 文杰 朱: https://appshunter.io/developer/438042072

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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 2026-08-24.*