I downloaded the trial and began in the relaxed mode, I tried to change it to timed mode and found there is no option to change that, I won't buy this because it might start me where I left off with no way to change the mode, I recommend the game but start in the mode you plan to stay in, I even tried reinstalling the game but it picked up where I left off in the relaxed mode
there does not appear to be a Tips forum for this game, I bought it and now stuck on a level pretty early in the game, would not have bought this had I known that