By Marc Weber
http://mawercer.de/spell is an early attempt to train spelling in various languages.
English, German, bengali, and many more coming soon -> write to support to have some added.
It remembers which words you got right doesn't ask multiple times about the same word.
You can use it from mobile phone.
What is Lingodeer?
Many of you might be familiar with the app called "Duolingo." Lingodeer is very similar, but alongside the same style of gamified lessons that Duolingo provides: Lingodeer offers professionally made grammar notes on every single skill, features full native audio recordings on every word and sentence, has built in grammar review features, has a global leaderboard (And friends leaderboard) for competition, features video stories at the end of every skill, has built in pronunciation practice (Sentence shadowing capabilities), and features 10 languages to learn (with Italian on the way) taught in 13 languages. The app is available on iOS and Android.
If anyone has any questions feel free to ask me (I run their online forums as volunteer work and have followed the app since it was released, I have also completed the first half of Japanese and Korean on the app).