2016 update: I’ve been using MyFitnessPal, albeit reluctantly. They’ve introduced “Verified foods”, but they still leave a lot to be desired - for instance, if you search for “cucumber”, you’ll find 40 (forty) almost identical entries, all “verified”.
Or check this gem:
Many other users have complained about “verified foods”. I’ve found tons of typos in the food names, as well as duplicates and abused or misunderstood brand names (like in the “chicken” example above).
MFP doesn’t record when you ate a meal; you can assign some vague time to it, breakfast/lunch/dinner/snacks. This is highly frustrating, and at the same time pretty easy to implement.
As of October 2016, you still can’t report incorrect foods from the mobile app.
MyFitnesPal don’t offer a data export option, even though it’s a task an intern could probably complete in a week, and tons of 3rd party solutions have cropped up.
However, once you accumulate a list of recent foods, it becomes easier to track if you keep eating only those foods.