Poor tech & quality control.
I don’t usually make the effort to find an app and leave a review. But this app is so frustrating. The videos don't stream in 4k. If you set streaming quality to “auto”, it will stream in 1080p or lower. If you force the streaming quality to 4K, the videos stutter and don’t load properly. This is not an internet connection problem on my end as I have a gigabit connection. The owners of this app likely were too cheap to pay for good streaming servers. Also, the quality of videos is all over the place. Some are great, some look like they were filmed with a phone and then poorly encoded. You’re better off finding some 4k nature videos on YouTube, especially if you have YouTube premium.