What is Reddit's opinion of 多機能お絵かきアプリ：Ravioli Paint 2?

From 3.5 billion Reddit comments

Some apps that I've been trying out recently:

• Ravioli Paint 2 - I swear this thing's the most powerful free image editor I've come across. It even includes exporting to *.ora file format (which is a rarity!) so I can continue my work on the picture in Gimp. There are, however, a few UI flaws that bug me.
• Drawchemy - The alchemy drawing app on the phone. What else can I say?
• FTP server - (from FDroid, not sure what happened to the google play link for it) I like the fact it has both an anonymous read-only view and a read/write view.

https://play.google.com/store/apps/details?id=jp.gr.java_conf.syou.raviolipaint_2