The risk gauge is the big circle on the home screen with a number inside. It tells you, in plain colour, how likely it looks that a migraine could come today. (For a full explanation of the number itself, see "How does the risk score work?".)
You do not have to set anything up to use the gauge. MigraineMe ships with sensible defaults and the gauge starts working from your first day. But the Risk Model screen has a few settings you can adjust if you want it to be a little more, or a little less, jumpy.
Where to find the Risk Model settings
These steps are the same on iPhone and Android.
- Open MigraineMe.
- Tap the gear icon in the top-left corner. A drawer slides in.
- Tap Risk Model.
The Risk Model screen has two sections: Gauge Thresholds and Decay Curves.
Gauge Thresholds
The gauge has four zones: None (very quiet), Low (green), Mild (amber), and High (red).
The Gauge Thresholds section sets the minimum score to enter each zone. The intro at the top says "Minimum score to enter each risk zone. Tap to edit." Defaults are:
- None: 0 (this one is locked)
- Low: 3
- Mild: 5
- High: 10
Each shows as a small circle with the number inside. Tap a circle, change the number, and tap Save at the bottom when you are done. You will see a green message: "Saved — risk scores recalculated".
When to lower a threshold
If you feel the gauge stays green even on days that turn out to be tough, lower the Mild or High thresholds. The gauge will turn colour sooner, giving you an earlier nudge.
When to raise a threshold
If you find the gauge sits at amber or red most days and is starting to feel like noise, raise the thresholds. The gauge will only change colour when the score is really high.
The weekly recalibration also nudges these thresholds for you over time, based on which days actually came before an attack.
Decay Curves
Just below Gauge Thresholds is a section called Decay Curves with the intro "How quickly trigger risk fades over days. Tap a bar to edit."
When a trigger affects you (say, a poor night of sleep), the effect does not vanish at midnight. It fades over a few days. The Decay Curves section lets you tune how slowly or quickly that fade happens, separately for High, Mild and Low triggers. Each curve is a set of day-by-day weights from today back over the last six days. You can leave the defaults if you are not sure. This is an advanced setting; only tweak it if your risk score consistently feels off.
Choosing the 3 metrics under the Monitor Risk card (separate feature)
There is a related setting that lives somewhere else: the Risk card on the Monitor tab shows three metrics beneath the risk score (sleep duration, HRV, weather pressure, and so on). To choose which three, open the Monitor tab and tap the Risk card. Then tap the card at the top of that screen (on iPhone it is called Customize Risk) to reach Choose 3 Favorites. This is a display preference; it does not change the gauge calculation.
Resetting back to default
If you ever want to undo your gauge changes, tap the Reset Defaults button on the Risk Model screen. Your thresholds and decay curves go back to how they were, and you can tap Save to apply.
A note on patience
The risk gauge gets better the more data MigraineMe has about you. For the first two weeks, the score may bounce around a little while the app learns your normal. Try to give it time before retuning the thresholds. After about a month, you will have a much better feel for what colours match what kind of day.
