Alerts¶

Strimma can alert you with sound and vibration when your glucose crosses configurable thresholds.

Alert Types¶

Strimma has eight alert types, each with its own Android notification channel so you can customize the sound and vibration for each one independently.

Glucose Threshold Alerts¶

Predictive Alerts¶

System Alerts¶

Priority Logic¶

Alerts follow a priority system to avoid duplicate noise:

• Urgent Low takes priority over Low. If your glucose triggers both, only Urgent Low fires. When it rises above the urgent threshold, Urgent Low clears and Low can fire if still below the low threshold.
• Urgent High takes priority over High. Same logic — only the more severe alert fires.
• Predictive alerts only fire when in range. If you're already low, "Low Soon" won't fire — you already know.

Snooze¶

Each alert has a 30-minute snooze. When an alert fires, the notification includes a Snooze button. Tapping it silences that alert and any less severe alerts in the same category for 30 minutes.

• Snoozing a lower-severity alert does not suppress higher-severity alerts — snoozing Low Soon doesn't affect Low or Urgent Low, and snoozing Low doesn't affect Urgent Low
• After 30 minutes, alerts can fire again if the condition persists
• Snooze state is stored locally and survives app restarts

Pause by Category¶

You can pause entire alert categories for a custom duration — useful during exercise or known post-meal spikes.

• Set a custom duration when pausing
• The pause auto-clears when the duration expires
• Pause state survives app restarts

Configuring Alerts¶

Go to Settings > Alerts to configure each alert:

Enable/Disable¶

Each alert type has an independent toggle. Disabled alerts never fire, regardless of your glucose level.

Set Thresholds¶

For the four glucose threshold alerts (Urgent Low, Low, High, Urgent High), you can set the threshold value. Enter the value in your configured unit (mmol/L or mg/dL).

Customize Sound¶

Each alert type has a Sound button that opens the Android notification channel settings for that alert. From there you can:

• Choose a different notification sound or alarm tone
• Enable/disable vibration
• Change the vibration pattern
• Override Do Not Disturb settings (for urgent alerts)

Do Not Disturb Bypass¶

Urgent Low and Urgent High alerts bypass Do Not Disturb mode by default. This is critical for safety — a severe low at 3 AM needs to wake you up.

The other alerts (Low, High, Low Soon, High Soon, Stale Data) respect Do Not Disturb by default. However, you can change any alert to bypass DND:

1. Go to Settings > Alerts
2. Tap the Sound button next to the alert you want to change
3. In the Android notification channel settings, enable Override Do Not Disturb

This is an Android feature — once you change a channel's DND setting, Android remembers it.

How Alerts Are Triggered¶

1. Strimma receives a new glucose reading
2. The reading is checked against each enabled alert's threshold
3. If a threshold is crossed and the alert isn't snoozed, the alert fires
4. Stale data is checked every 60 seconds independently

Re-alerting¶

Alerts keep firing as long as the condition persists. Each new glucose reading triggers a check — if you're still low and the alert isn't snoozed, it fires again. This means you'll get alerted on every reading until you either:

• Snooze the alert (silences it for 30 minutes), or
• Return to range (the condition clears)

If you snooze an alert and you're still out of range when the snooze expires, the alert fires again on the next reading.

This is intentional — a persistent low or high should not be silently ignored.