No it doesn't pasta it shows them how long it takes for the Insulin to control the meal.......the meal.
An 80 year old who has been a Type 2 diabetic for 10 years wouldn't be interested in that.
If you were newly diagnosed, keen to associate blood sugar spikes with certain foods, maybe, but most oldies can't be @rsed.
Wolf made a good point in that many experienced diabetics can guess their blood sugar readings quite accurately.
But if for whatever reason one wants to test 4 times a day then go ahead.