Read the trends chart

What each chart shows

Every chart here is your own entries for the measure named above it. Nothing is averaged across other people, and nothing is predicted.

Which charts you get depends on the app, and they are not the same measures.

• iPhone and Android draw Pain over time: one bar per day, the average intensity from 0 to 10 for that day. On Android the chart holds only the seven most recent days you logged pain.
• iPhone and Android also show a Body map of where you logged pain; on Android that card lists up to four body areas, highest average intensity first. Android also draws Goal ability (PSFS) as a line once you have rated your goals at least twice — a function score, not your pain. Neither charts computer usage: on iPhone the Computer use card counts your usage days instead, and on Android the Outcomes & experiment card does.
• iPhone also shows Acute medication days, a list rather than a chart: the number of days in the last 30 on which you logged an acute medication in Achetrace, in total and for each medication class, with each dose listed; Android and the web app do not show it.
• The web app draws Pain over time as a line: one point for each day you logged pain, at that day's average intensity from 0 to 10, with a table of the same days behind "Show as table". Below it, Computer usage shows active minutes per day from your paired Mac or Windows computer as bars — an exposure overlay, not your pain. Phone usage is not part of Computer usage.

So "the trends chart" is not one thing: each app draws daily pain its own way, computer usage is charted only in the web app, and goal ability is charted only on Android.

Days with no entries

A day you logged nothing is a gap, not a zero — and whether the chart shows you that gap differs by phone.

On iPhone, the pain chart is drawn against real dates, with a labelled day axis. A week you did not log leaves an empty stretch of that width, so the gap is visible and the dates under the bars are worth reading.

On Android, it is not. The chart receives intensity values alone and draws no dates at all, so a week you did not log sits directly against the week before it with nothing marking the break — and there are no dates under the bars to check. A flat stretch there can mean "no pain" or "no entries", and the chart cannot tell you which.

That makes the Android chart a shape to read for rough direction, not for when something happened. If a stretch looks unexpectedly calm, open your timeline for the same period before concluding anything from it.

In the web app, the pain line places each logged day at its date, so a week you did not log is an empty stretch of that width between two points. Days with no entries are left out of the line and its table, never drawn as zero.

Why a caveat appears

What appears, and whether you can interact with it, depends on the app.

In the web app, a note sits under the chart whenever some days could not be fully verified by the desktop sensor, and it names those days. It is always visible — there is nothing to open or close.

On iPhone, the equivalent explanation is in the Computer use card, behind a disclosure control you open, and it stays open until you close it.

On Android, the trend cards do not yet carry this note at all. If you are comparing a period where some days may be incomplete, use the web app to see which ones.