AndroidAPS is a free, open-source artificial pancreas system that connects a CGM with an insulin pump to automatically adjust basal insulin delivery. It requires significant setup but provides tight glucose control that no commercial closed-loop system currently matches for most users.
What AndroidAPS Does
AndroidAPS reads your CGM glucose data every 5 minutes, calculates the ideal basal rate using an algorithm (OpenAPS algorithm), and sends commands to a compatible insulin pump to adjust delivery. It loops continuously — hence “closed loop.” The result is automated basal adjustments that reduce highs, lows, and the mental burden of T1D management.
Required Hardware
- Compatible Android phone (fairly modern, dedicated phone preferred)
- Compatible CGM: Dexcom G6/G7, FreeStyle Libre 2/3, or other supported sensors
- Compatible insulin pump: Omnipod DASH, Omnipod 5 (limited), DANA-i/RS, Accu-Chek Combo, some Medtronic models
Not all pump/CGM combinations work together. Check the AndroidAPS compatibility list before purchasing hardware.
The Objective System
AndroidAPS uses a safety framework called “Objectives.” You complete objectives that progressively unlock more automation — starting with monitoring only, then limited assistance, then full closed-loop. New users typically take 4-8 weeks to complete all objectives. This is intentional: it ensures you understand the system before relying on full automation.
Is AndroidAPS Right for You?
AndroidAPS is appropriate for:
- People with Type 1 diabetes on intensive insulin therapy
- Tech-comfortable users willing to invest time in setup and learning
- Those with compatible hardware already or willing to acquire it
It is not appropriate for Type 2 diabetes not on insulin, anyone uncomfortable with DIY technology, or anyone without ongoing medical supervision of their diabetes management.
Where to Learn More
The AndroidAPS documentation (androidaps.readthedocs.io) is comprehensive and actively maintained. The Looped and AndroidAPS Facebook groups provide community support. This is not a system to set up from a blog post alone — read the official documentation carefully.
Disclaimer: AndroidAPS is not FDA approved. Use requires your own informed decision and medical supervision. We provide informational content only.