Synonymful VS Easy Ten

Reji - Improve your vocabulary hassle-free 📚

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

Grammarly - Clear, effective, mistake-free writing everywhere you type.

Lingvist - Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.

Stacknote - Make your writing surprisingly efficient

Fluent - Fluent is a people-based marketing platform that uses real-time, one-to-one interaction to create custom audiences and serve personalized ads that drive performance at scale.