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2025-10-15

Welcome to News from Loop and Learn

Master Your DIY Closed-Loop Insulin Delivery System

Published on 15 October 2025

In this edition:

Upcoming Open Mics

Our next Open Mic is on Saturday, Oct. 25, and we’d love to give a special shoutout to Trio users -and those who are curious about Trio- to join us for this one! Of course, that doesn’t mean anyone else is left out; everyone is always welcome and invited!

Loop and Learn: Informal Discussion (Open Mic) virtual meetings are scheduled on the second Thursday of each month and the fourth Saturday of each month.

There is also an Italian Open Mic on the last Tuesday of each month for iOS and Android loopers (with Patrick Sonnerat for AAPS).

Calendar

Topic Recorded? Time Date
Loop and Learn: Informal Discussion
Open Mic on 4th Saturday
Zoom		 no 21:00 UTC 25 October 2025
Loop and Learn Italia: Informal Discussion
Open Mic on last Tuesday of each month
Now Using Zoom		 no 19:00 UTC 28 October 2025
Loop and Learn: Informal Discussion
Open Mic on 2nd Thursday
Zoom		 no 18:00 UTC 13 November 2025

Video Conference Sessions use the following links every month. Notice - they now have easy-to-remember redirects shortcuts:

Time Zone Converter

Need help figuring out when an event happens in your time zone? Try the SavvyTime: UTC Converter.

iOS 26: Please Wait

Please do NOT update your OS-AID phone to iOS 26 yet, and be sure to keep iOS automatic updates off for both Loop and Trio apps, so an update won’t happen when you’re not looking!

Release 3.8.1 for Loop

Version 3.8.1 for the Loop app was released on 23 September 2025; see details here.

  • Fixes the designed behavior of tapping on the bolus line to automatically replace the recommended value with zero
  • Adds updates to DanaKit
  • Restores going to Dexcom G6 app (for users of G6) when tapping on glucose in main screen
  • Additional translations added

Loop now requires iOS 16.1 or newer.

Did You Sign?

A new Apple Developer Program License Agreement needs to be signed by 23 October. Go there now and sign if you haven’t already!

If you need help, post in our Facebook group or on Zulip Chat.

Don’t Lose Your Bolus Button

This has been a big issue lately because lots of people aren’t getting the message:

Be sure your Loop app remains fully usable by waiting to update iOS until our team gives the “all clear”.

Check our Version Updates page and subscribe to this newsletter before updating anything that will impact your OS-AID app!

Current iOS 26 Bug Status

iOS 26 requires Loop v3.8.1 in order to be able to manually bolus.

A few other issues regarding changing Therapy Settings with iOS 26 are not yet fixed.

Time for a Change

Standard Time begins on:

  • 26 October for Europe
  • 2 November for the US

Be sure to use your app to update the clock on your pump at your convenience. Keep your phone on automatic time.

Automatic Build Times

We are in the process of modifying when the planned weekly checks and monthly builds are scheduled.

The LoopFollow and Trio apps are already changed to the new build schedule. This change will eventually propagate to other apps in the Open-Source ecosystem.

The system will check for updates every Sunday.

  • If there are no code changes, the build is skipped, except . . .
  • On the second Sunday of the month, a build is always attempted

Hackathon ‘25

To support the hackathon, anything you give will help cover hackathon and developer travel expenses.

By donating to The Nightscout Foundation, you’ll be funding travel, food, and lodging for our incredible developers to attend the Hackathon, November 14-16, 2025, in Vancouver, BC. Your support means everything! Here’s how you can make a difference:

Donate here: Nightcout Foundation: Direct Donations for Hackathon.

Hackathon Sponsorship Levels:

$ Support Level
$10 Keep the Diet Coke & sugar-free Monster Energy flowing
$15 Treat a developer to lunch during the hackathon
$25 Tacos anyone? Because let’s be real, one lunch isn’t enough
$50 Cover Zoom costs for remote developers
$100 Not sure what to sponsor? This is your level!
$250 Buy a round of drinks to celebrate after the hackathon
$750 Sponsor a developer's roundtrip flight
$1250 Cover half the lodging for 8 developers crammed into an Airbnb (it’s a team-bonding thing! )
$2500 Full lodging for 8 developers, plus Dan gets his own bed this time

To date, our generous donors have given $33,235 and there are many $10 contributions. Thank you! Let’s keep going towards our goal!

Interested in attending? Fill out this interest form. There is a virtual session (open to all) as well as the in-person session (limited attendance).

Problem Getting Libre Data into Nightscout?

If you aren't getting your readings in Nightscout from Libre, please log in to the LibreLinkup app and agree to their new terms of service.

Thanks to Jeff Singer for this tip!

LoopFollow 4.0 and 4.1 Released

The release of LoopFollow v4.0 brings a new feature for remote commands (with breaking changes — details below), plus a whole set of other great improvements.

LoopFollow v4.1 is a minor update of v4.0 that only affects people who use Browser Build.

If your LoopFollow browser build is failing, see these instructions:

If you use Mac and Xcode build - be sure to download a fresh version (or update your current main clone).

If you want to set up a second caregiver phone for remote control - check out the new QR code feature

twiist and Loop

Thinking about swiitching to twiist?

Our panel of former Loopers who have migrated to twiist shared some details with us! Learn more about the differences between DIY Loop and twiist, as well as how our panelists prepared for their twiist experience, their likes, dislikes, and things that surprised them.

Check out this Loop and Learn: Sequel twiist page with links to the video and more information.

Call for Speakers for DBHcon

Got a diabetes lesson to share? A story to tell?

Diabulemia Helpline (DBH) is all about breaking the silence at the intersection of diabetes & mental health—and they want YOUR voice at DBHcon26: DBHcon: International Conference on Diabetes and Mental Health (Nov 13–15, 2026) in Nashville, Tennessee!

They’re looking for speakers who can inspire, educate, and spark change. Whether you’re a diabetes advocate, healthcare professional, researcher, or someone with lived experience, this is your chance to be heard on an international stage.

  • Speakers receive FREE registration + a 2-night stay at the conference hotel.

  • Your story could be exactly what someone else needs to hear.

  • Applications are open now

Deadline is 30 December 2025.

LnL Team Members Meet in Person

September brought something truly special: two long-awaited LnL family meetups on two continents! Priscilla and Carol’s family gathered in Florida, while Miroslava and Tina’s crew met up in the heart of Italy. Though miles apart, both moments shared the same magic: laughter, connection, and the wonder of finally turning familiar names and faces on screens into real-life friends. The kids hit it off right away, proving that the LnL spirit runs strong across generations!

If you meet up with other Loopers or Trio-ers, please share your pix with us!

Halloween Candy Carb Counts

Our friends at Breakthrough T1D created this helpful guide to “Celebrating Halloween with type 1 diabetes”. They have great tips and carb-counting guides.

Trick or Treat!

Facebook Q&A