chiming in here since I'm the original poster

We still have Ooka Island till the spring for now when our subscription expires but might extend it. We'll see. DS is now 5.4 years old and we are strongly suspecting dyslexia/dysgraphia. He went to public Kindergarten for the first trimester and then we pulled him out to homeschool after Thanksgiving break. We don't use Ooka Island on a daily basis like I would want to, he gets too defiant if I want something from him regularly but he does use it about 2-3 times a week and when he does, he'll sit with it for an hour or longer. I found out the best way for us to use it is when he does it in his room on a laptop and I'm not around, he's actually really trying hard pronouncing the sound and doing everything else it asks him to do. When I'm around he's too distracted.
He's finally now making a little progress with reading basic words but it's always an issue when he comes to a b/d, p/q ... he gets stuck because he can't tell if it's a d or b and ALWAYS guesses wrong

If we could be without those 4 sounds, he'd be a fluent beginning reader now! But yes, we do love Ooka Island!