$0.99 for standard version, $7.99 for plus, $19.99 for pro.
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Pros
Pro Shows smaller objects
Users can view asteroids, satellites, comets, and meteor showers with information included.
Pro Detailed search function
Objects can be found according to name, magnitude, number, Ra, and other attributes.
Pro Highly informative
The app has historical mythological and scientific information on hundreds of objects. Over 120,000 stars can be viewed, near star clusters, nebulas, galaxies, and major planets and moons in our solar system.
Pro Can simulate changes of celestial bodies over time
The app is capable of simulating movement up 100 years in the future and past.
Pro Adds a subscription to SkyWeek, Sky & Telescope
SkyWeek, Sky & Telescope's subscription inform of upcoming eclipses and meteor showers.
Pro Various events can be animated
Events such as eclipses, meteor showers conjunctions and transits can be animated.
Cons
Con Paid Plus or PRO of app only for current version
Payment of Plus or PRO app is active only for current version (f.e. v.5). Next version (v.6) has to be paid again.
Con Might overwhelm a casual stargazer
There's a lot of information and functionality in this app that might be a bit too much for a beginner astronomy enthusiast.
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