Version Updates

For information about updates to Apple OS and Xcode versions, as well as Loop and Trio, click the links below:

• Updating your phone’s iOS
  • iOS/Apple Updates
  • Latest Tested iOS and Xcode Versions for Mac-Xcode Builders
• Update your OS-AID (Open Source Automated Insulin Delivery system)
  • Loop Updates
    • Loop Customization Updates
  • Trio Updates
• LoopFollow Updates

Loopers should not update to any beta version of iOS, macOS or Xcode.  There are no features in the beta version of any software that are more important than your ability to manage insulin delivery from your phone/medical device.  

iOS 27

iOS 27 was released on 14 September 2026.  We are not recommending iOS 27 yet because your looping phone is a medical device.  Please wait for at least iOS 27.1.

If you must update your looping phone’s iOS, then please

1. Commit to rebuilding frequently as the developers will be adding fixes for display and other glitches
2. Update to the latest version of Loop (3.14.7.x) or Trio (1.0.x)
3. Update your iOS

iOS / Apple Updates

We recommend that all loopers treat their phone as a medical device.  Please exercise caution when updating your phone’s iOS, especially for a major update such as iOS 26 to 27.  Minor updates are typically less problematic, but we test every update to be sure.  Auto updates should be off.

Turn off Auto-update

Do not set your Loop phone to auto-update its iOS version 

In iPhone Settings, go to General / Software Update / Automatic Updates.

1. Turn on “Automatic Downloads”
2. Turn off “Automatic Updates”

Once you upgrade the iOS, it can be very difficult (sometimes impossible) to downgrade.

It’s a good idea to do the same on your computer.  Both the operating system and Xcode should have auto-update turned off. But please, update as soon as the all-clear is sounded.  Updates can provide very important security fixes as well as nifty new features.

iOS versions

We recommend the latest iOS 26.x for all Loop, Trio and LoopFollow users.  We do not recommend iOS 27 (yet).

There are a few special warnings for loopers who update to iOS 26.x:

• Loop users should have the latest release, v3.14.7 or newer, on their phone
  • Loop 3.8.2 is a bare minimum for use with iOS 26
• Trio users should have the most recent Trio main 1.0 or newer, on their phone
  • Trio 0.6.0.9 is a bare minimum for use with iOS 26

What are the latest “tested” versions?

The Versions of macOS and Xcode that you need are based on your phone’s iOS.  These Versions have been tested to operate and build both the main and dev branches of Loop, LoopFollow, LoopCaregiver, and Trio.  This table includes the latest tested versions of iOS, along with the compatible minimum Xcode and macOS versions.  Loopers should not update to any beta versions.

Loop Updates

• Mac-Xcode builders – use the Build Select Script to build main       
  
• Browser Builders – make sure your default branch is main.  We do not know why, but GitHub is disabling the Build Loop Action for LoopWorkspace forks. You will need to manually Enable the Build workflow and Build Loop – we suggest you do this once a month.
• If you need help, please ask on Facebook or Zulip

Loop Current Release:

• Loo 3.14.7 was released on 15 September 2026; see details here.  This is a big release, Here are the exciting new features and fixes:
  • Omnipod 5
  • Supports New Bluetooth connection method for Omnipods to limit 203 Fault
  • Fix for G7 Sensor glucose reading drop-outs (when G7 App was still getting readings)
  • Automatic Build restored for Browser Builders 
  • Minimum iOS is 17.6
  • iPhone X (without an extra letter) and 8 are no longer supported.

Loop Recent Release History:

• Loop 3.14.0 was released on 14 May 2026; see details here
• The Pod Keep Alive feature for Loopers using Omnipod with iPhone 16 (all models) or iPhone 17e is now part of the released code
• Live Activity Plots on the phone are improved
• Live Activity on the watch now opens the Loop app on the watch
• Bugfix: the G6 sensor start used to report a time in the future which messed up SAGE reporting on Nightscout – that is now fixed
• Loop 3.12.0 was released on 24 February 2026; see details here
• • Improved Live Activity Display
  • Added support for real-time response for remote commands when using LoopFollow
• Loop 3.10.0 was released on 10 January 2026; see details here
  • Adds G7 15-day support
  • Adds Live Activity (live_activity customization not needed)
  • Enables G6/G7 default to upload glucose (dexcom_upload_readings customization not needed)
• Loop 3.8.2 was released on 31 October 2025; see details here.
  • Restores ability to save some therapy settings and restores Save button behavior (enabled is blue, disabled is grey)
  • Warning for Dana users – this version does not support Dana but feature branch now provided to support Dana and Medtrum pumps
• Loop 3.8.1 was released on 23 September 2025; see details here.
  • Fixes designed behavior of tapping on the bolus line should automatically replace the recommended value with zero, which stopped working after changes were made to this interface to accommodate iOS 26
  • DanaKit and other updates
• Loop 3.8 was released on 14 September 2025; see details here.
  • Adds support for Dana-i and DanaRS-v3 pump models
  • Updates translations and convert to String Catalogs
  • Supports iOS 26

Trio Updates

If you need help, please ask on Facebook or Discord.

Trio main version 1.0.0 was released on 15 Seotenber 2026.  See complete details here.

• Trio thinks in your iPhone’s “own language” now – the dosing algorithm was rewritten from JavaScript into native Swift; identical decisions, twice as fast, easier on your battery
• Omnipod 5 – full support, including the guided first-pod setup (requires one-time internet connection). This release also supports a new bluetooth connection method for Omnipods to limit 203 Faults for Dash pods
• FreeStyle Libre 3 and 3 Plus (Beta) – paired directly in Trio, with no companion app and no internet connection needed to loop
• Eversense E3 and 365 – the implanted sensor family, with optional upload to Eversense DMS
• Accu-Chek SmartGuide – Roche’s 14-day sensor, now a first-class Trio CGM
• A rebuilt Home screen – drag, pinch and scrub through up to 72 hours of data in Trio’s chart, with one smart panel that surfaces whatever needs your attention
• A Modernized Look – Liquid Glass has made its way to Trio, making it look like a proper iOS 26+ app
  Alarms you can actually hear – four separate bugs were silencing them; on iOS 26 and later, critical alarms now sound even when iOS has put Trio to sleep
• Dosing Modes – the Closed Loop switch becomes a four-way choice: Closed Loop, Open Loop, Low Glucose Suspend and Basal Testing
• Quick-Pick Treatments – Trio learns the amounts you actually use and puts them one tap away
• Forecasts on your wrist and lock screen – the glucose prediction now appears on the Apple Watch app and in the Live Activity
• Garmin complications – put glucose, IOB and COB on any Connect IQ watch face
• Built for everyone – massively improved accessibility pass across VoiceOver, Dynamic Type and contrast
• Release notes inside the app – read what changed without leaving Trio
• Steadier under the hood – a large reliability pass on data storage, background work and pump event handling
• Anonymous diagnostics are on by default – no health data is ever sent, and opting out is one tap in Settings
• Minimum iOS is 17.6

Trio Release History

• Trio main version 0.8.0 was released on 14 May 2026.  See complete details here.
  • Anonymous opt-out Telemetry: helps the team understand how Trio is used, backed by Apple App Attest
  • Therapy settings upload to Tidepool: Trio now pushes basal, CR, ISF, and target settings into
  • Tidepool alongside treatment data
  • Delete glucose from Nightscout: glucose entries deleted in Trio now propagate to Nightscout
  • Override confirmation dialogs: optional confirmation step before activating an override or temporary target
  • Bolus progress in Treatments view: see the active bolus and cancel it without leaving the Treatments screen
  • Context menus on all swipeable history list items (long-press alternative to swipe)
  • Settings Search scroll-to and highlight: tapping a search result now scrolls to and briefly highlights the matched row
  • Bolus safety checks unified: Shortcut-driven boluses now get the same max-bolus, max-IOB, and recent-bolus validation as APNS remote boluses
  • Nightscout site change events corrected: fixed false positives for Medtronic, added a proper
  • SiteChange event for Trio History
  • Glucose smoothing window fix: smoothing now correctly uses the newest 350 readings, not the oldest
  • Submodule updates: OmniBLE (pod keep-alive now part of main), DanaKit, MedtrumKit, CGMBLEKit

• Trio main version 0.7.0 was released on 15 April 2026.  See complete details here.
  • Completely redesigned interface across iOS and watchOS
  • Entire app logic and data storage rewritten
  • All-new step-by-step setup with HCP-approved defaults and safety checks
  • Glucose smoothing refactored (AAPS-style), FPU handling simplified, safety improvements
  • Added Dana-i and Dana RS and Medtrum Nano patches (200U / 300U), OmniBLE/OmniKit fixes, MiniMed finer dosing,
  • Reworked Remote Control: APNS feedback to LoopFollow with AES-256-GCM encryption
  • Live Activity with device-specific layouts, improved complications, better readability
  • Reworked Integrations: Nightscout, Tidepool, and Apple Health rebuilt; settings export
  • Full Crowdin-based workflow with 35+ language contributors

   

  The Trio 0.6.0 series of versions was started on 6-October-2025; see details here.

  • Display latest dev version in Settings for non-main builds
  • Add steps in Onboarding for uploading to Nightscout
  • Add toggle for external insulin in Shortcut Action
  • Implement APNS feedback for Remote Commands

LoopFollow Updates

If you need help, please ask on Facebook.

LoopFollow version 7.0.0 was released on 25 July 2026.
This is a big release — rebuilt charts, an onboarding guide, custom alarm sounds, smarter alarms, and a long list of fixes.  ⚠️ iOS 18 required

LoopFollow version 6.0.0 was released on 25 April 2026.
This adds Live Activity along with other new features; so you can get LoopFollow display on your phone, watch and CarPlay (minimum versions pertain).
The Browser Build process will not work until you take action, which include running the action Add Identiifers, Creating the LoopFollow App Group (if you don’t already have one), adding the LoopFollow App Group to the LoopFollow Identiiers and running the action Build LoopFollow.
If you use the Mac Xcode build method- just download a fresh build and enjoy.

More Information

You should always be in a position to build your OS-AID system when necessary. The best practice is to use Browser Build (which takes care of Xcode compatibility for you) or to upgrade your build computer to the required macOS and Xcode version before upgrading the iOS on your iPhone.  Of course, that’s your choice.

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This page will be kept up-to-date as new versions are released.  You can also sign up for the newsletter, but new version updates may not always be included in the newsletter.  This page is your best “one-stop shop” to answer general questions about versions and compatability.