Sure-- I used FreeUP for my primary line for a number of months, paired with whatever best option I had for data (in a dual-SIM phone.)
Since I use Google Voice as my outward-facing number, and GV for texting, my original 500 talk OR text was effectively 500 talk/unlimited text through google voice, and whatever for data. (FreedomPop basic when I didn't have anything else, a Tracfone promo, Mint, etc.)