My hope about Chaos Rings is that's it's just a collection of 1-3 (or 1 + 2 + Omega) because there's a chance that would release in the west. Some Vita-spinoff would never come over here.
Also, pricing wise, Vita version seems to be ¥4300 for the download or ¥4800 for the retail version. Even with silly Vita-specific inflation, that's a hell of a lot more than the Android/iOS version will cost.
I'll just wait a few days and see what develops from this. I can always play the games on my phone eventually if need be.