App that learns your habits could help tame diabetes

NCT ID NCT04226027

Completed Disease control Sponsor: Columbia University Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested a smartphone app called T2.coach that tracks diet, blood sugar, activity, and sleep, then uses machine learning to give personalized behavioral goals. About 280 adults with type 2 diabetes and high blood sugar used the app for 6 months alongside standard diabetes education. The goal was to see if the app helped lower HbA1c levels compared to usual care alone.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: T2.coach smartphone app with personalized behavioral goals
What this could lead to: If it works, this could offer a practical, low-cost way for people with type 2 diabetes to improve blood sugar control through personalized lifestyle tips.
What could go wrong: This is a completed trial with 300 participants, but the app is only a behavioral tool—it won't replace medication or cure diabetes. Success depends on long-term user engagement.

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Conditions

The condition(s) this trial relates to.

type 2 diabetes mellitus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

TYPE 2 DIABETES

Contacts and locations

Locations

Clinical Directors Network

New York, New York, 10018, United States
Columbia University Irving Medical Center

New York, New York, 10032, United States

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