The app is nicely designed. There are some annoyances in design such as not being able delete favourites in the favourites area and instead having to select the planet first and then remove from favourites. I dislike that they omit objects - for example they do not have all of Jupiter’s (or other planet’s) moons. This is just not acceptable in a paid app at this price. Moreover, you can pay an annual subscription (you must already have paid for pro to get this) to add another database and a nice space craft “control centre” that shows you where spacecraft are in real time but objects remain missing. You also get the option to turn on notifications of events. I think the latter should already be included in the pro purchase like in other apps (eg sky tonight) and I don’t think their subscription is worth it…this even moreso now as they increased the fee yesterday by 42% literally overnight. Now it’s at this price, Luminos Pro with EVERYTHING and no need to purchase before subscribing becomes a no brainer.