I have been using Log Me In for about 3-4 months, it allows me to keep my important data available everywhere which was the same problem you are having.

Im not sure on the limit of computers on the free edition, but I currently have 2 that are on my username.

I tried the pro, then stuck with the free edition, although if they have ignition for use with andrioid iphone or ipad, not sure on the price though!