Does any know if there is a mobile app for 你 to write and 上传 fanfics to www.fanfiction.net?

Personally I don't have android devices (If android is even on kindle) but if 你 look around the android 商店 I'm sure there's a few free 写作 apps. I write all my stories with an app on my iPhone but it isn't available for android. I 电子邮箱 out the text, then paste and 编辑 through it via MS Word on my computer before uploading the file to fanfiction.

Thankfully in your case 你 can paste raw text to fanfiction however theses no way to auto correct it. That is unless 你 use 谷歌 chrome 或者 maybe even firefox as a web browser (they have built in auto corrector).

iPhone has word apps with built in spell checkers so I'm sure android has some, but I'm not sure. Hopefully this helps.