Thanks for the suggestion. We do have a feature on our to-do list that allows you to leave yourself a quick note (or notation) that is not a journal. You'll see it first in the upcoming food tracker and then it'll be extended to all of our older trackers.
For which tracker would you like to add a healthy target range? Perhaps we can get these added for you.
When you say you can't edit "notes", are these the notes on your Tracker page or elsewhere?
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