I have been using it mainly for European Portuguese, and it works very very well. It is not obstructive, the tips are quite reasonable and it is very effective.

Siempre se puede mejorar

Просто великолепное расширение.работает великолепно везде!

it helps in correcting mistake...

Using this addon for years and it always helpful!

LT macht was es soll. Gut finde ich die Mehrsprachigkeit des Tools.