How to get low, high and critical alerts for Dexcom G7 and G6
Yes. Sweet Dreams sends free low, high, rise, drop and missed-reading alerts for Dexcom, and any of them can be a Critical alert that plays a sound even when your iPhone is muted or in a Focus mode such as Sleep. You connect with your normal Dexcom account (not Dexcom Follow).
- Works with
- Dexcom G7, Dexcom G6, Dexcom ONE+
- Sign in with
- your normal Dexcom account (not Dexcom Follow)
- Updates
- A new reading every 5 minutes, when Dexcom uploads it.
- Not supported
- Dexcom ONE (the original); Stelo
- Alerts
- Free for everyone
Step 1: Connect Dexcom to Sweet Dreams
Already have a follower in Dexcom Follow? Skip to the last step.
- Open the Dexcom app and tap the Share icon to turn on Dexcom Share.
- Invite at least one follower. Your own email address works. Dexcom doesn't send readings to its servers unless someone follows you, so this step is required even if you only want to see your own data.
- In the follower settings, make sure the follower can see your trend graph.
- Accept the invitation in the Dexcom Follow app. Download it first if you don't have it.
- In Sweet Dreams, choose Dexcom and sign in with the wearer's Dexcom account, not the Dexcom Follow account.
Step 2: Set up alerts
- Go to Settings → Notifications in Sweet Dreams.
- Tap an alert (for example Low) and set its threshold.
- Tap Priority and choose Regular, Time Sensitive (stays on the Lock Screen for an hour) or Critical. Critical alerts play a sound even when your iPhone is muted and override Focus modes such as Sleep. Allow Critical Alerts when iOS asks.
- Set up missed-reading alerts too: a standard alert, plus an escalation if readings still haven't arrived.
Good to know for Dexcom
- Alerts are sent from our servers, so Sweet Dreams doesn't need to be open.
- Threshold alerts: Very Low, Low, High and Very High.
- Change alerts: Big Drop, Drop, Rise and Big Rise.
- Missed-reading alerts: a standard alert and an escalation alert when no new reading arrives.
- Sweet Dreams alerts are an extra layer. Keep the alarms in your CGM's own app turned on.
- Notification profiles (such as Sleep, Gym or School) let you switch all your alert settings at once, and can switch automatically with Shortcuts.
Common questions
Are alerts free?
Yes. Alerts are free for everyone.
Which Dexcom account do I sign in with?
The sensor wearer's Dexcom account. Turn on Dexcom Share with at least one follower, then sign in to Sweet Dreams with the wearer's Dexcom account.
Does Sweet Dreams work with Dexcom ONE or Stelo?
No. Neither uploads readings to Dexcom Share, which is where Sweet Dreams reads them from. Dexcom ONE+ is supported.
Why do I need a follower if I only want to see my own readings?
Dexcom only sends readings to its servers when Share has at least one follower. Inviting yourself counts.
Free on the App Store for iPhone, Apple Watch, iPad and Apple silicon Macs.
Last updated 2026-10-12