[vincentschen]

No! To get started, there are many opportunities for VR dev on smartphones. You can even start working with hand-tracking with the new Samsung Gear/Google Daydream!

However, you do need a PC with a pretty good GPU if you want to get serious about playing with more advanced systems like the Vive and the Rift. (This was a great resource for me when I built my PC! http://www.logicalincrements.com/articles/vrguide)