By far my favorite photography planning app. I have been using it for years now and it is really helpful for informing my night sky framing for milky way photos, timings, when to go out. And many more great planning features such as full ephemeris and mapping tools. I use it for planning moon cycles, milky way windows, and golden hour, sunset, and twilight timing.
Please use one of these links below to check out this wonderful app for your phone