iOS should be available soon; Android is available now. My teammate Sven Tiffe writes,

After releasing Snapseed 2, we’ve heard a lot of excited voices, but also listened to your constructive feedback. You told us and we heard you, Grunge is back!

We’ve started rolling out the Android update today, and the iOS update will follow shortly. This update includes:

• The return of the Grunge filter
• The ability to copy, paste and hide Control Points in Selective
• Improved styles in HDR
• An option to export flat copies on iOS 8 for compatibility with apps like Lightroom & Dropbox

And of course, stability and performance improvements. We’re continuously working on improving Snapseed and you can expect more in the future, so stay tuned!