Trio, an automated insulin delivery (AID) system built by and for the open-source community, has officially launched version 1.0. The release, nicknamed “Gummy Clusters,” has been more than two years in the making and is the largest official update to the system since its formation. The update was peer-reviewed and tested by developers and volunteers across the open-source community, with future releases set to continue the candy and hypoglycemia-treat naming scheme as a nod to the work that’s gone into this app. This system is not cleared by the FDA or any regulatory department and is community-built. Trio is designed to give users more control over their AID system while making the app easier to use for a broader audience.

Version 1.0 expands hardware support and is now compatible with Omnipod 5, Libre 3 Plus, Eversense E3 and Eversense 365, Accu-Chek SmartGuide, and many other CGMs and insulin pumps. The app's home screen has also been rebuilt, so users can view glucose levels and trends, predicted glucose, pump status, active insulin and carbs, boluses, carb entries, and automated basal adjustments. The interactive chart can be pinched-and-zoomed to show up to 72 hours of history, while a redesigned information panel prioritizes the stats that needs the user's attention.

Accessibility is another major focus of the update. Trio now describes important statuses in words rather than relying solely on colors and icons, while charts have VoiceOver labels and controls that previously relied on gestures have been made accessible to VoiceOver users. The settings tab is now easier to navigate and includes a search bar, so users aren’t overwhelmed with options and descriptions. That said, Trio continues to be one of the more comprehensive and settings-intensive open source systems and may not be for everyone.

For now, Trio only works on iOS. Loop, another popular DIY AID system, also is exclusive to iOS, and Android APS (AAPS) works with android devices. We have invited Trio developers to come on the podcast to walk us through the updates and answer your questions. Drop your question in the comments below!

DISCLAIMER: Open source apps like Trio are experimental and not approved by the FDA or regulatory authorities at the time of this video. You take full responsibility for building and using open source apps and you do so at your own risk. Results will vary.