This is definitely one of the best apps to learn toki pona out there. It starts you off with pretty easy basic concepts, but quickly gets easier, till already after just 2 days I’m already translating full sentences. I’ve been intentionally trying to read stuff in toki pona (mostly just people talking on discord and Reddit) for a while but this really let me grasp it. My only complaint is that I sort of wish there was more time to learn concepts, or maybe review easier, since sometimes I feel like I finish a section before I fully grasp all the words, but overall pretty good. Also, you can tell that they’ve responded to reviews that other people had made, such as someone who said they should add a dictionary, and they now have an easy to use dictionary at any time. I also kinda wish I could learn sitelen pona without paying money, but I know they have to make money somehow. Sina pona tawa ilo ni!