Remember this is a highly subjective personal account related to my experiences and what works for me. I am not paid or compensated by either company or their sponsors.
I’ve tried both apps for at least eighteen months a piece over the past five years. Sometimes I even used both of them as a means of comparison.
I prefer MyFitnessPal hands down.
Why you ask? MFP is based on the real numbers you can read in any label with no quibbling and no special formulas or calculators. It has a stronger more complete barcode reader built in that is constantly being updated. It has a full community of support with forums and the ability to find others via their social media that may have experiences you can relate too or challenges. It has the ability to be directly linked to lots of other tech, like Fitbit’s and pedometer apps for smart phones. And let’s not forget it’s free.
The Weight Watchers app at the time I experienced, gave everyone a complete pass on fruits and vegetables. Had no link to other tech (for the time I used it). Required a subscription fee. Required me to use their tools to figure out if I was eating properly. Yes, they do have an immense social support community. And I think they have a lot of valuable support, but…. it’s not free and it’s not enough to make me rule differently.