We are looking into raising the minimum device requirement for our future updates. At this point there is very little chances that our “global” update will reliably run on a device that has less than 1GB of RAM. While we are still optimizing as much as possible, we also need to set the bar a little higher so we have some room for future features.
One thing we are considering is to only support devices that have OpenGL ES 3.0 support which would greatly improve some features we have planned (also most OpenGL ES 3.0 devices should have >= 1GB RAM)
On iOS, any device in this list or newer would be supported.
On Android it is a bit more complicated: the easiest way might be to install an application like this one and see what is reported.
In order to help us decide on what to do next, feel free to vote below based on the type of OpenGL ES support you have on your device (please be sure before voting):