You're looking for a detailed feature list of SkyMap Pro 12, a popular planetarium software, and you'd like to know about its free version. Here's what I found:
Skymap Pro 12 Free Review: A Comprehensive Look
Sky Map (formerly Google Sky Map): A completely free and open-source mobile app for Android and iOS that uses GPS and sensors to identify celestial objects in real-time. It is available on Google Play and the App Store.
SkyMap Pro 12 Free Version Features:
LigoWave is excited to announce that Deliberant and LigoWave are merging. Great on their own, even better together. One website combining the PTP & PTMP products, LinkCalc, software tools, and renowned support to make your job easier. The former Deliberant APC product line will be the “APC series” under LigoWave. Take a look and give us your feedback!