An Android version is not available at this time. We may make an Android version available in the future, depending on available resources and technical feasibility. We do understand that many of you would like to see the app available on Android.
We made TPE 3D for iOS initially in part due to the nature of the available technologies and 3D software frameworks available on that platform. To bring the app to Android would require identification of a suitable technical approach and would effectively be a ground up re-write.
We don't generally talk about future product availability (things change, life often intervenes, and when plans change, people are sometimes disappointed). Therefore, if and when a version is available for Android, we'll be sure to shout out about it!