App aims to get cancer survivors moving – but trial stopped early
NCT ID NCT03953326
First seen Feb 28, 2026 · Last updated Jun 23, 2026 · Updated 17 times
Summary
This study tested a smartphone app called HeartPhone that appears on the lock screen to encourage physical activity in breast cancer, leukemia, and lymphoma survivors. Participants used the app for 3 months and wore a Fitbit to track activity. The goal was to see if the app could increase exercise and improve blood vessel health. However, the trial was terminated early with only 2 participants enrolled, so results are very limited.
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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The Pennsylvania State University
University Park, Pennsylvania, 16802, United States
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
HeartPhone app (behavioral intervention)
What this could lead to
If it worked, this app could help cancer survivors become more active and improve their heart health.
What could go wrong
The trial was terminated early with only 2 participants, so we have very little data. It is unclear if the app is effective or safe for wider use.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.