Not great for Welsh
The app is a great idea in theory but doesn’t work well in practice yet. The Welsh course is just in the northern dialect - I’ve been learning the southern dialect which is very different and it wouldn’t recognise my (southern) correct answers. There are also a few bugs - one task asks you to say 30 (spelt out as tri deg). I said “tri deg” and it wrote it down as “30” and told me that was incorrect.