Most of the other online reviews of White Frog seem to have been written by teenagers who have seen more TV than movies, so I'll try to give an adult perspective, in case any other adults are thinking about renting or buying this movie.
First of all, except for two of the adults, I had never before seen or heard of any of the actors in this movie. So a statement like "Booboo Stewart gives, by far, his best performance to date" just leaves me puzzled. A person named Booboo has made movies before? Wow.
Others who rattle off other movies or TV shows these cast members have appeared in together, or refer to a "handsome teen idol cast" also leave me (and probably many other adults) clueless.
Second, I was not ever for even one second moved to tears while watching this movie. Not anywhere close. It is EXTREMELY sappy and manipulative - and painfully predictable. If you are eager to be swept up in shallow emotionalism - or are an adolescent who can't help it - then you may love this movie. It just made me want to pull my hair out.
Finally, if this really is Booboo's "best performance to date", he might want to consider a different career while he's still young enough to change easily. Only very young people who have seen very little of life and the world could be impressed by his performance in this movie. He looked down and mumbled all through the movie... and THAT is supposed to be a great performance? Only in an adolescent TV universe could that be true.
So I'd advise adults to look elsewhere and leave this movie to the kids, with their innocent enthusiasms and the rampant emotions that seethe just under the surface of their lives. It may be better than the TV they're used to, but as a movie it's not worth watching.