After opening the game once and allowing use of your documents you close the game. After this you have to place the archive.rpa file in the Documents/Renpy_saves/com.jestur.ripples/game folder.
After you've done this, start up ripples again and it should work!
I've done it. If i haven't i would't have wrote this comment. I will try it on pc when i have the time. The Android version is not working on my phone. I tried both download sites