Praktika is the best English teaching app that I've tried so far. So good that I've decided to buy a 3 months subscription. Having an AI tutor to talk to me in English and help me along exercises has been really productive and fun. I really enjoy talking about subjects like art, science and daily life with the AI tutor. The good points are that you have a 7 days free trial period and the app is really easy to use. Once I had a few technical problems, but they never happened again. This is a very recent technology and sometimes AI will say things that are not logical, but most of the time it is amazingly accurate. Another point is the accent. I've chosen American accent but I notice that every now and then the accent sounds a little British or different. I ain't got nothing against British accent, it's beautiful, however when you're learing consistency is key. Nonetheless, this app is a real miracle, something I had been waiting for for so long. I hope it improves to the point of being impossible to tell whether you're talking to a bot or not.