Good Day Folks!
Firstly, I must compliment you on your amazing software - new user here and it's an incredible feat of software development in my opinion...KUDOS! :))). Running 6.0.4.34 on a "OnePlus X" device for now, Oreo 8.1.0, fully stable. I am experiencing a couple of subtle bugs that may be helpful to report.
1. In "Settings/Stars/Magnitude Limit" if you set the value to say, 6.0, the app will consistently randomly reset to a lower number (i.e. 5.7) when you reopen it later. Same thing for "Deep Sky" - I will set it at 9.0; it will reset to something like 8.8 - when I recheck upon reopening the app later, both settings will change in the same way. The app does this on both Nougat (7.1.2) and Oreo (8.1.0). It is a bit frustrating to have to constantly reset the values - seems to be a potential bug (?). Can't think of why the app would be designed to do this.
2. When you activate the notifications under "Settings/Appearance & Behavior/Notifications section - "Planet Risings" & Satellites and Flares" both checked (or, either/or) - when run on Oreo 8.1.0, the visual notifications (tray) do not fire but the audio does - ONLY when you have the app exempted from "Battery Optimization" or running (neither will fire if the app is inactive and optimized); however they do fire properly in Nougat 7.1.2 unoptimized (no issues EXCEPT that they seem to override "Do not disturb", which is another issue I discovered at a meeting LOL). Something else to note is that when you check under Notifications in Android (Nougat & Oreo), the notifications options in Nougat are extensive and complete - yet in Oreo, there are only 2 options visible: a toggle to turn notifications on or off, and a toggle for "Allow notification dot". That's it, so something seems missing or incomplete there as compared to Nougat and perhaps that is a clue or symptom of the issue (?).
Overall impressed as heck with your work and happy to be a client and user of the app as an avid Astronomy buff. I hope something here helps and maybe these things can be fixed if it turns out they are not isolated to just me and can be replicated. Thanks and Happy Thanksgiving!
Jason