Version history
Mobile Observatory Free - Astr
35
ASO score
Text
55/100
Reviews
0/100
Graphic
40/100
Other
0/100
App Rating
4.6
Votes
705.59K
App Age
6y 2m
Last Update
May 19, 2021
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Installs
|
676.7K
|
40.7M
|
-98%
|
|
Rating
|
0
|
4.53
|
|
|
Number of Ratings (Voted)
|
0
|
109.6M
|
|
|
App Age
|
6y 2m
|
7y 11m
|
-22%
|
|
In-app Purchases Price
|
$0
|
$121
|
|
|
Update Frequency
|
1688d
|
41d
|
+3 973%
|
|
Title Length
|
30
|
28
|
+7%
|
|
Short Description Length
|
76
|
73
|
+4%
|
|
Description Length
|
2 774
|
3 261
|
-15%
|
|
Number of Screenshots
|
1147
|
1323
|
-13
%
|
|
Has Video?
|
No
|
0% has videos
|
|
|
Size
|
0MB
|
0MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
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| Top | Dec 24, 2025 | Dec 31, 2025 |
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| Top | Dec 24, 2025 | Dec 31, 2025 |
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Text ASO
Title
(
Characters:
35
of 50
)
Mobile Observatory Free - Astronomy
Short Description
(
Characters:
76
of 80
)
Your resource for stars, planets, the Sun, the Moon, and astronomical events
Description
(
Characters:
2774
of 4000
)
Mobile Observatory Free is the perfect tool for anybody interested in the sky's wonders, from the occasional sky gazer to the passionate amateur astronomer.
If you want the ad-free version, please visit
https://play.google.com/store/apps/details?id=com.zima.mobileobservatorypro
Do you want to know if the next lunar eclipse is visible from your location or when the next bright comet is visible? Would you like to be notified by your smart phone next time, Jupiter and the Moon meet in the sky? Do you want to know what the blazing bright object in the evening sky is? Do you want to be always up-to-date which celestial events that are visible from your location? Then this app is a must-have for you!
Mobile Observatory does not only include a live, zoomable sky map which tells you what sky object you are looking at but provides you with loads of detailed extra information on stars, planets, deep sky objects, meteor showers, asteroids, lunar and solar eclipses as well as detailed ephemeris of all included sky objects and an interactive top-down view of the Solar System. All that in just one app!
Mobile Observatory Free is the free version of the successful astronomy app Mobile Observatory Pro, which is available for purchase on Google Play.
The key features of MO Free are as follows:
- Photo-realistic display of the night and day sky with correctly illuminated landscape. Its the only app on Android which renders the sky physically correct, taking into account atmospheric scattering. Only the real sky is more beautiful...
- 30.000 stars to magnitude 7
- 3D-view of the Solar System
- Automatically created calendar of celestial events
- Map of the Earth showing day and night
- Automatic calculation of interesting celestial events for your location
- Daily notifications of current celestial events
- 1000 minor planets
- All 88 constellations
- Messier and Caldwell catalogs (220 Deep Sky objects)
- ... and much much more...
Mobile Observatory displays the current view of the sky, the times of rise and set of any object, current positions, and apparent views of the planets, twilight times, moon phases, celestial events (such as conjunctions and eclipses), a 3D-view of the Solar System and much more. Use Live Mode to point your device to the sky and find out what you are looking at using the orientation sensors or get daily notifications of celestial events.
Mobile Observatory currently includes data for the Sun, Moon, seven planets + Pluto, a built-in star catalog of more than 30000 stars (to magnitude 7), the Messier catalog (110 objects), and the Caldwell catalog (110 objects). The orientation sensors of your device can be used to use Mobile Observatory as a guide to the sky via Live Mode.}
Read more
Other
Additional Information
😢
Deleted from App Store
| Rating: | |
| Voted: | 705.59K |
| Google Play Link: | |
| Website: | |
| Email: | |
| Privacy Policy: | |
| Categories: | Education |
| Size: | - |
| App Age: | 6 years 2 months |
| Release Date: | Oct 18, 2019 |
| Last Update: | May 19, 2021 |
| Version: | 3.3.4 |
Version history
3.3.4
May 19, 2021
- Several bugs fixed
3.3.3
Jul 29, 2020
Major Update: Now equivalent to the latest version of Mobile Observatory Pro, except for the advertisements.<br> Improved layout, many bugs corrected and several new features<br> Current catalogues of artificial satellites, minor planets, and comets can now be downloaded after watching a video ad (unlock is valid for two days)