Coming from someone who’s used Duolingo on and off for about as long as it’s existed, and seen its system change time and again over the years, I feel that Busuu’s system has a focus on certain essential ideas of what it means to learn a language that Duolingo has historically struggled with. I’ve been impressed with Busuu has crafted exercises which prioritize the meanings behind words rather than just translating back and forth, and how the community feature directs students to actually express thoughts of their own in the language they’re learning. These are things that the base loop of Duolingo typically fails to integrate, and that new features, only presently available in particular Duolingo courses, have only begun to address.The monetization scheme of Busuu is also something I appreciate, in that there are meaningful features you can get with a subscription, but what you get for free (with ads, to be clear) still feels like a complete and healthy product, and it doesn’t feel like I’m being pushed unnecessarily hard to buy a subscription: this is also something which has frustrated me with Duolingo in recent years, even though free Duolingo is still entirely complete, there are a lot of factors which push very hard in the direction of a subscription.I still use both apps, but Busuu is the one which keeps me better engaged with actually learning a language, and it is the one I would recommend to someone learning a language it supports.