iTalki is an excellent platform to get one on one tutoring lessons with native speakers. I use it to get speaking practice for Spanish and Mandarin, and I also take Korean exam prep lessons on italki. (Here’s a review I wrote)
Readers of this blog get $10 USD in italki credits after booking your first lesson. Sign up using this link!
Skritter is an awesome way to learn Traditional and Simplified Hanzi (Chinese characters) as well as Japanese Kanji.
Skritter usually costs $14.99/month but you can get 33% off and pay only $9.99/month for six months.
All you need to do is sign up on the desktop website first here. After that, you can download any of the mobile apps. The discount is already applied.
Through signing up via my link, you can try it out for free for 15 days (instead of 7).