I’m working on a topi pona app to help people learning the vocabulary. It’s named “o kama sona e toki pona!“.
Actually only available in French, it will be available in English soon. The app is free and will be released on the google store.
While waiting, you can try the Windows version (english and french language). Linux and macOS versions are on their way too.
About toki pona…
Toki Pona is a human language I invented in 2001. It was my attempt to understand the meaning of life in 120 words.