Over the years, Apple has iterated the iPad many times, with nearly two dozen different models in many sizes. It didn’t take long for the iPad, and the tablet in general, to flourish. At the time, this ground-breaking device was competing with netbooks (remember them?) for primacy in the lightweight/portable device market. Available in one size (9.7'), with three storage options (16, 32, or 64 GB), a Wi-Fi only version was released first, with a Wi-Fi and cellular model following shortly after. Apple Which iPad Is Best for You in 2021?