Service doesn't choose a worst key

[lain...@gmail.com]

Hello there! 
Thak you for the service, it's very helpful for training touchtyping. 
But I have an issue, after i'd comleted all keys from russian layout it doesn`t suggest the worst key for training, insted status bar  says "Current key: No key". Hope you'll fix it! Good luck!

[Juan Monroy-Nieto]

No language actually does this. It is a pity since this is one of the things that make this service stand out. I hope they fix it.

[luca...@gmail.com]

For sure it would be a valuable feature for me too. I use the custom text option to train while read my e-books, and that's the most I can take out of it.