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App that learns your habits could help tame diabetes

NCT ID NCT04226027

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

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

300 people

The number who actually took part.

Started

Jan 2020

Finished

Mar 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patient of the health center for ≥ 6 months and a diagnosis of T2DM * HbA1c ≥ 8.0, * Aged 18 to 65 years * Attends diabetes education program at the health center * Owns a basic mobile phone * Proficient in either English or Spanish Exclusion Criteria: * Pregnant * Presence of severe cognitive impairment (recorded in patient chart), * Existence of other serious illnesses (e.g. cancer diagnosis with active treatment, advanced stage heart failure, dialysis, multiple sclerosis, advanced retinopathy, recorded in patient chart), * Plans for leaving the FQHC in the next 12 months, * Participation in the previous trial of diabetes self-management technologies

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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

More trials for these conditions

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