Hey there! Thanks for pointing this out. Unfortunately, 1gb ram is probably not enough to run the game on Android without issues. I tested it on a mid-range phone with 3gb, where it runs just fine, but I wouldn't recommend going much lower than this.
The game was initially developed to be played primarily on desktop and thus contains a high amount of high resolution graphics, transparency and animations. While this isn't a problem on PC, on Android this takes up a lot of memory, so phones with lower specs might not be able to handle it.
I'm going to add some recommended specs to the download instructions with the next build as a guideline.