After the very successful release of SwapQuest on the App Store, it was also released on Google Play today. Instead of paying upfront, you can download the game for free and decide after the first two levels if you want the full package for $1.99.
Another addition is the option to buy more jewels via IAP to be able to afford that next ability upgrade sooner. Please note that these microtransactions are totally optional, the balancing of the game hasn't been touched.
To celebrate the release on Android, the iOS version has its first sale, reducing the price to $1.99. The sale ends this Sunday (May 3), so if you have missed out on the game before, now's your chance.