Are personal trainers able to use nutrition software legally? ADVERTISEMENT 798 viewsOctober 29, 2015 0 Bridgett October 29, 2015 0 Comments I am wondering if I am able to use nutrition software legally. 7 Answers ActiveVotedNewestOldest 0 Darrell Posted 0 Comments Yes. You just can’t call yourself a nutritionist, licensed nutritionist, etc. Be careful not to make any claims. You are viewing 1 out of 7 answers, click here to view all answers. Register or Login