Great society to join!
The main reason you should be using this app is connect with Planetary Society members and keep up with events (meaning you're already a member). Another review complains about "no free tier", but you can get plenty of free info by subscribing to their newsletters through the website. The Planetary Society itself is trying to raise money for space missions so OBVIOUSLY there have to be paid tiers to support that, and you can join for as little as 4$/month or $50 for a year (I'm not rich and that's totally reasonable). I'll move on to the app now! There is a great foundation here with room for improvement once there's a larger community. You can easily follow people and see updates, comment/cheer like most social networks, and watch live events as well as getting notified about them. The only thing lacking right now are members, but this app is still pretty new. I highly recommend heading to planetary.org to sign up, there are cool perks and it's great to know you're contributing to new science and research. Can't wait to see where this app goes in the future!