Sun Position Viewer vs Haru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sun Position Viewer
Visualize the sun's path and position from your exact location. See sunrise and sunset times, track seasonal changes, and use the sun compass to find the perfect photo opportunities.
- Sun path visualization
- Sunrise and sunset times
- Adjustable date for seasonal views
- Sun compass
- Augmented reality view
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Know where the sun rises and sets, and how high the sun is at each point. All from your point of view. You can see the sun's movement through your iPhone or iPad. If you want to know the sun's position at a certain date, no problem, you can set any date you want. So you can see the difference between seasons. This app also tells you at what time the sun will rise and set, and it has a handy sun compass. Want to take that great sunrise or sunset picture? Know where to point your camera.
Haru
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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.
Screenshots
Verdict
The clearest difference is update cadence: Haru at every 6 weeks against Sun Position Viewer's every 26 months. Sun Position Viewer's advantage is chart position (#165 vs unranked) and iOS requirement (10.3 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Sun Position Viewer costs $0.99 and Haru $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Sun Position Viewer ships an update every 26 months, Haru every 6 weeks. Both last shipped on November 11, 2026.
| Parameter | Sun Position Viewer | Haru |
|---|---|---|
| Price | $0.99 | $0.49 — better |
| Rating | 1.8 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 26 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #165 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 17 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Klaas Kremer | 文杰 朱 |
In-app purchases
Sun Position Viewer
No in-app purchases
Haru
No in-app purchases
Questions
Is Sun Position Viewer free?
Is Haru free?
Do Sun Position Viewer or Haru have ads?
Which is updated more often, Sun Position Viewer or Haru?
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