When it comes to automated insulin delivery, two systems often stand out for people who want a tubeless pump — Omnipod 5 and the open source app that uses Omnipod pods, DIY Loop. Both use advanced algorithms to help manage blood glucose levels automatically, but they approach automation from completely different paths — one is open-source and community-driven, while the other is FDA-cleared and commercially supported.

Having used and compared both, I can say that while their end goals are similar, the journey to get there feels quite different.

DIY Loop is an open-source system that users build themselves, combining compatible insulin pumps, CGMs, and an Apple device to create a closed-loop system. The algorithm works by predicting future glucose levels and automatically adjusting basal insulin delivery every five minutes. Because it’s open-source, users have full control and customization, from adjusting glucose targets to tweaking algorithm behavior. But this also means taking on full responsibility — there’s no customer support, FDA approval, or company warranty. That said, there is a thriving Loop Facebook group for support and Loop Docs where people can get detailed instructions for building and using it.

On the other hand, Omnipod 5 brings automation in a more user-friendly, regulated package. It’s FDA-cleared, designed to work seamlessly with the Dexcom CGMs, and built to continuously adjust insulin delivery every five minutes based on your glucose data and trends. The algorithm “learns” your patterns, adapting insulin doses to help keep you in range throughout the day. And because the system is integrated into a commercial platform, it comes with the reliability of customer support, safety checks, and consistent updates.

Choosing between the two depends on your comfort level. If you prefer full control, flexibility, and don’t mind a DIY approach, Loop offers that freedom. But if you value ease, regulated safety, and official support, Omnipod 5 is a fantastic choice — especially with its growing compatibility and features.

If you want to learn more about these algorithms, listen to our full discussion with Jon Fawcett who has used both systems for the management of his daughter’s diabetes. You can listen to the episode above or watch in video below.

Disclaimer: Diabetech content is not medical advice—it’s for educational purposes only. Always consult with a physician before making changes to your healthcare. DIY apps 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 DIY apps and you do so at your own risk. Results will vary.