Before and after
Open a medication and tap Compare before / after. The app counts what you logged in the weeks before it started and the same number of weeks after.
What it shows
One row per symptom in a before-and-after grid, and each cell carries its own denominator — “19 of 53” on one side, “21 of 69” on the other. That is deliberate: 19 of 53 and 21 of 69 are not “19 → 21”, and a bare pair of numbers would read as a change when it is mostly a difference in how much you logged. The windows are equal — 28, 56 or 90 days, and never longer than the time since the change. If fewer than 90 days have passed, a fourth chip appears with however many there actually are.
It does not say the medicine did anything. There are no arrows, no percentages, no words like better. Two counts of your own days, side by side, for you to take to the person who prescribed it.
When it refuses
If either window has fewer than five logged days, or fewer than half its days logged, the app says how many more days it needs instead of drawing a comparison out of nothing. That is a deliberate floor: a comparison built on four days looks exactly like one built on forty.
What else was going on
Above the rows, before you read a single count, comes Other changes in this period: other medications started or stopped, dose steps, states beginning or ending, and how many days on each side carried a tag — sick, travel, stress, medication change. It comes first on purpose. A flu week inside the “after” window is worth knowing about before you read anything into the numbers.
Hair removal is named
If Unwanted hair is one of the rows, the app adds how many days on each side you marked removing hair. A rating of unwanted hair the day after a shave is a rating of the shave, and a comparison that hid that would be worth less than nothing.
Which medications can be compared
The most recent one is free. Comparing any medication you have ever taken — including one you stopped two years ago — is Plus.
A dose change counts too
The anchor can be a dose change rather than the start: the same comparison, from the day the dose moved.