A scale that connects to a calorie tracker app, working as follows:

1. Pressing a button on the scale transmits the current weight to the app (although obviously, not the actual name of the item, at this point).
2. This can be done repeatedly, until I’m ready (usually, after sitting down) to annotate the items, where I’ll see a list of weights and timestamps for un-annotated items
3. For each item, I can then assign a food to it (and meal), populating the calories

Absent this, I find it extremely annoying and tedious to add an ingredient, wash my hands (depending on what it is), find an appropriate food in the app* and log it, then add the next ingredient, etc. The alternative is try to remember both the ingredient name and the weight, in order**.

If this does exist, or something sufficiently similar, I’ll be thrilled; I looked a fair amount and it didn’t seem like it, however.

*related, but different— I should be able to filter for foods that have a weight unit; it’s extremely annoying to have to, one by one, open entries for “New York pizza” and find that they have the useless unit of “1 slice” (and commensurately varying calories between 200 and 700) until I finally get down to one that has grams or ounces.

**my ideal workflow above does involve remembering the ingredient still, but that’s much easier than also remembering the weights, especially when the number of weights in the inbox will be a good mnemonic to not forget any ingredients.