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SkySafari for Android Version Comparison

Please Note: SkySafari is now owned and supported by Simulation Curriculum Corporation. This page contains legacy information for owners of older versions of the app. For the latest information on SkySafari for Android, go to

Southern Stars offers three versions of SkySafari that differ in the size of their database, and in their selection of features. All three versions require Android OS version 2.2 or later, and run on Android tablets as well as phones. SkySafari uses standard Google Play licensing. You can install it on as many Android Devices as you have linked to your Google Play account. SkySafari requires a Google Play account, and will not run on devices (like the Kindle Fire) which do not have Google Play access.

The table below lists the main differences between the three versions of SkySafari.

App Version

SkySafari 4

SkySafari 4 Plus

SkySafari 4 Pro

App Icon
App Size 67 MB 302 MB 1.2 GB
Regular Price (USD) $2.99 $14.99 $39.99

Visual Comparison

These images are screen shots from SkySafari running on a Verizon Motorola Droid Razr Maxx HD Android phone. They show an identical region around the Orion Nebula (M 42), near the Orion's sword in the winter Milky Way.

This provides a visual comparison of the depth of detail in the stellar and deep sky databases included with SkySafari's Pro, Plus, and basic versions.

Click any image to enlarge.

Database and Computation

Number of Stars 119,940 2,637,791 27,074,634
Star Magnitude Limit ~8.0 ~12.0 ~15.0
Number of Deep Sky Objects 222 31,586 743,500
Deep Sky Magnitude Limit ~10.0 ~15.0 ~18.0
Number of Planets & Moons 34 38 187
Number of Asteroids 121 15,832 627,931
Number of Comets 251 632 3,241
Number of Satellites 205 1,460 1,460
Planetary Position Accuracy 10" - 1' < 0.1" < 0.1"
Number of Horizon Panoramas 3 6 10
Number of Object Descriptions 626 1,476 1,629
Number of Object Images 473 592 865
High Resolution (1024 x 768) Object Images No No Yes
Complete General Catalog of Variable Stars No No Yes
Complete Washington Double Star Catalog No No Yes

Features, Graphics, and Interface

Compass Support Yes Yes Yes
Bluetooth & Wi-Fi Telescope Control No Yes Yes
Telescope Equipment Settings No Yes Yes
Custom Observing Lists No Yes Yes
Orbit Solar System Objects No Yes Yes
Orbit Nearby Stars No Yes Yes
Hi-Res Earth, Moon, Mars maps No Yes Yes
Ultra-Hi-Res Moon map No No Yes
Planet & Moon Surface Feature Labels No Yes Yes
Saves, Restores, and E-Mails Settings Yes Yes Yes
Imports Custom Horizon Panoramas Yes Yes Yes
Updates Solar System Orbit Data Yes Yes Yes
Alt-Azimuth ("Local Horizon") Sky Charts Yes Yes Yes
Equatorial ("Star Atlas") Sky Charts No Yes Yes
Ecliptic ("Solar System") Sky Charts No Yes Yes
Galactic ("Milky Way") Sky Charts No No Yes
Coordinate Grids and Reference Lines No Yes Yes
Computation Precision & Precession Settings No Yes Yes
Date, Time, & Coordinate Format Settings No Yes Yes
Computes Conjunctions, Oppositions, Eclipses, Transits Yes Yes Yes
Computes Objects' Angular Separations No Yes Yes