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Compatible CGM

Compatible CGM

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The Loop app is compatible with:

  • Dexcom G4 Share, G5, G6 or ONE CGM systems
    • Dexcom ONE (based off G6 sensor) is available in some countries, but will be discontinued soon
  • Dexcom G7
    • Dexcom ONE+ (based off G7 sensor) is available in some countries
    • At the current time, the Dexcom ONE+ cannot be used with Loop but pay attention to social media - an early indication is that a simple patch will allow this to work, but that patch is not available - more testing is needed
  • Medtronic sensors connected to a Loop-compatible Medtronic pumps
  • Some Libre sensors: dev branch only


Continuous Glucose Monitor (CGM)

The Loop app uses your CGM glucose readings, carbohydrate input and therapy settings, to model your current glucose trend, predict future glucose and automatically adjust insulin dosing. A compatible CGM is essential to operation of the Loop app.

Dexcom G5, G6 and ONE CGM img/g5.jpg

The Dexcom G5, G6 and ONE CGM transmits data directly to the Dexcom app on your iPhone via Bluetooth.

The Dexcom ONE, available in some countries, acts just like the G6 as far as the Loop app is concerned. The Dexcom ONE app does not provide some features, such as Dexcom Share, that come with the G6. When you set up the Loop app, select Dexcom G6 as your CGM to use Dexcom ONE CGM with the Dexcom ONE app installed on your phone.

Dexcom ONE+ is not yet compatible

There are reports that Dexcom is transitioning to the ONE+ based off the G7 platform. These devices cannot be used with the Loop app at this time.

Pay attention to social media - an early indication is that a simple patch will allow this to work, but that patch is not available - more testing is needed.

Only available in some countries. This link is for Poland Dexcom ONE+

If the Dexcom app is on the same device as the Loop app, your system can function without an internet connection. See Offline Use below.

Dexcom G5 Support

Dexcom has stopped supporting the G5 system in the US. In the US, and some other countries, the G5 is not available for download from the Apple Store. There are countries in which Dexcom does supply and support G5. The G5 capability will continue to be supported in Loop.

There are third party apps, which interface with G4 and G5 transmitters, supported by some forks of Loop. The version of the Loop app supported by these documents only works with the Dexcom apps.

Dexcom G7 CGM

Dexcom G7 is supported with version 3 or greater of the Loop app.

Medtronic CGM img/enlite.png

The Minimed Enlite CGM, available with the Medtronic 522/722, 523/723, and 554/754, wirelessly sends glucose readings to the pump. The Loop app can read the Medtronic CGM data directly from the pump using a RileyLink compatible device.

Offline Use

"Offline Use" means using the Loop app when there is no cell data or internet available. The Loop app does not require any special setup to operate offline.

For offline use, the iPhone's Bluetooth still needs to be active; and for Dexcom users, the G5, G6 or G7 app also needs to be running on the same phone as the Loop app. If you put your iPhone into Airplane mode, remember to turn Bluetooth back on to keep both the CGM and the Loop app running. If your offline use is failing, chances are you have forgotten to update your transmitter ID in the Loop app settings when you changed transmitters.

Dexcom Share

The Loop app can download Dexcom Share data for use in modeling glucose. However, this is not a typical configuration and requires internet connection for both the phone with the Dexcom app and the phone with the Loop app. The steps for adding a CGM explain that you usually enter the Dexcom transmitter ID and leave the Dexcom Share setting blank.

Dexcom ONE

The Dexcom ONE app does not support Share.

Nightscout as a Remote CGM

Version 3 or later of the Loop app can use Nightscout as a remote source for CGM data. This requires cell or WiFi connection.

CGMs Not Supported in the Loop App

Libre Support (for some Libre sensors) is available with Loop-dev or by adding customizations.

Currently, there are no solutions for Eversense, Guardian or Libre 3 CGM to be used directly with the Loop app, but some Uploaders to Nightscout are available using an Android phone. Version 3 or later of the Loop app allows the use of Nightscout as a CGM source.

Next Step

If your compatible pump is Medtronic or Omnipod (not DASH)

If your compatible pump is Omnipod DASH