Pinyin App missing letters

I noticed that W is missing from the chart in the app. Are any other letters missing?

I might have an old version since I’m in China and can’t access Google play.

Hey @MikeyM,

Considering the new app doesn’t have a pinyin chart, I’m going to attribute this to something going on with the old app. Is the pinyin chart a feature you find yourself using frequently on mobile?

I’m actually referring to the pinyin standalone app you guys have. I find it useful for pronunciation cause you can click on it and hear how a syllable is supposed to sound. It’s good for when i come across new words as a beginner. But i imagine the usefulness will wane with my development.