[GraemeJ]

There are two versions of MS available on SlideMe - the free version (which is limited to the number of charts you can import, but has all the features enabled so you can test it out in full) and the paid-for version, which has no limitations.

Mobile Sheets Pro has just been released (literally, just) and as I write, as far as I can see, that is only available from Google Play Store, although I presume Mike will also make it available on SlideMe over the next few days.  MSPro has many more features, but playing around with MS will still teach you the basics.