It hovers at about 200 on Google Play and dips as low as 350 on iOS, but mostly stays in the 200-300 band.
Hovering at about 200 on GP, huh? Well, if that insane failure (compared to predecessors) that's been Chaos Rings III left to us (it only recently went over 5,000 downloads on GP, absolutely dreadful), is a possible estimate of what means being around 200th
This is a Chaos Rings III's analysis I made back in November
http://neogaf.com/forum/showthread.php?p=138724180&highlight=chaos+rings#post138724180
Reposting Grossing Ranking + correlated analysis for clearness
October 18th, 369th Overall - 100 < x < 500 copies sold --> Yen 280,000 < x < Yen 1,400,000 grossed
October 19th, 288th Overall - 500 < x < 1,000 copies sold --> Yen 1,400,000 < x < Yen 2,800,000 grossed
October 20th, 238th Overall - 500 < x < 1,000 copies sold --> Yen 1,400,000 < x < Yen 2,800,000 grossed
October 21st, 197th Overall - 1,000 < x < 5,000 copies sold --> Yen 2,800,000 < x < Yen 14,000,000 grossed
...
November 12th, 321st Overall - 1,000 < x < 5,000 copies sold --> Yen 2,800,000 < x < Yen 14,000,000 grossed
For a certain amount of the considered period (up to October 30th, the game stayed in between 100th - 200th confortably, and then it started going down and down). Considering how it went over 1,000 downloads the day it entered top 200, I'll consider the amount of days between October 21st and October 30th, i.e. the last day it was in top 200. So, 10 days.
Daily Grossing Average (October 21st - October 30th) - 280,000 Yen < x < 1,400,000 Yen.
Considering how it just recently the game went over 5,000 downloads LTD, I'd say the DGA for that period is faaaaaar nearer to 280,000 Yen compared to 1,400,000 Yen. Something like 400,000 to 450,000 Yen per day is a possible better estimate, maybe?