Just messed about with the rain overlay and have a few comments :
- Agree w/ previous post about complexity of having rain switched on in both weather and layers. My first thought was to look for it in layers too, but I can understand the logic in putting it with the weather tab.
- Time scrubbing feature is awesome! Would love a time lapse loop option, as my display doesn't leave much room to visualize while scrubbing...
- The tab bar takes up 50% Off my screen as well (Sony Z3TC w/ 1080p screen) I'd make the font even smaller, but I can't. Note, I tried this on another tablet with a 4k display and SkyDemon looks gorgeous! (tab bar only takes up about 25% of screen and is still perfectly readable)

- My vote is for enabling rain during navigation. I typically have a 3g connection in flight, and for longer flights (2+ hrs) being able to get current weather without having to exit nav mode would be tremendous.
- I'm all for a timeout. If rain is more than e.g. 45-60 mins old, it should simply be switched off automatically and if a user tries to switch it back on, they must have an Internet connection to update it...
- Also agree with previous comments about opacity of rain being important. If opacity could be set at something like 50%, it would be really useful for in flight decision making (not navigation per se, rather situational awareness).
Being in SW Dev, I appreciate the changes and improvements you've made in the time I've been using the app. Thanks a bundle for your efforts and I hope it is financially rewarding.