Home Dim Light Melatonin Onset
Home DLMO
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
The dim light melatonin onset (DLMO) is the gold standard circadian phase marker in humans. We previously developed a proof-of-concept home DLMO kit and demonstrated that valid DLMOs could be collected at home, with objective markers of light exposure and sample timing. Nonetheless, the proof-of-concept kit uses costly external technologies such as photosensors (to monitor light exposure) and MEMS TrackCaps (to monitor sample timing).
We have designed an iPhone app that:
(1) streamlines the home DLMO collection procedure,
(2) maintains the objective assessment of light exposure and sample timing with internal app features,
(3) provides real-time feedback on errors in light exposure and sample timing to both participants and externally located researchers, and
(4) provides some cost savings over the original proof-of-concept kit.
Programming capability includes options to (1) sample saliva at half-hourly or hourly intervals, (2) end sampling at participants’ habitual bedtime or up to 3 hours past habitual bedtime, and (3) set a light intensity threshold of choice to alert the research participant and externally located researcher in real-time that melatonin levels may be suppressed.
At the conclusion of the home DLMO collection, the app generates a report of light levels and sample timing for the researcher. Saliva samples can then be sent to a qualified laboratory for assay processing.
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* Updated intro video
* Updated closed captioning
The developer, The University of Michigan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
- Identifiers
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- The University of Michigan
- Size
- 185.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 12.0 or later.
- iPhone
Requires iOS 12.0 or later. - iPod touch
Requires iOS 12.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © The Regents of the University of Michigan