iPhone Screenshots


Nitelog™ is a wonderful mobile companion for the Z1 Auto™, the lightest cpap machine available anywhere. Use the app to control the Z1 Auto™, monitor sleep quality on beautiful charts, generate compliance reports and share data.

At only 10 ounces, the Z1® is a great everyday machine that is also ideal for travel. Slip the Z1® into the PowerShell® and you have a full night of cord-free sleep. Enjoy!

What's New

Version 1.1.1

Bluetooth Compatibility Update for iOS 9

Ratings and Reviews

1.9 out of 5

34 Ratings

34 Ratings

Great app, but...


I love the app in theory, but the problem I have is the log only shows a 12 hour window. This would be great if I went to bed at the same time every day, but I don’t. Im a truck driver and my sleep is never scheduled. I sleep when I can. It might be 3 in the afternoon or 3 in the early morning. I wish I could see a 24 hour day instead of the 12 hour window. Only using the 12 hours gives me incomplete reports.

Z1 App


Apparently this sight has not worked correctly in over a year and still not working right. I have to delete the app once every 3-4 days and it still does not work right after I reinstall this app. I am using this Z1 to be compliant to keep my CDL and it is showing I am not compliant even after a day earlier it showed I was.
I could lose my job just because THIS APP DOES NOT WORK RIGHT. I may have to go with another device so I can show compliance. I like the unit, but it does me no good unless the app works right. I does not do what I need it to do so it makes the Z1 useless to me.

Remains Bug-ridden and company non-responsive

Disappointed and Duped

The app has been updated for iOS 9.x but remains bug-ridden; with major issues as to usability and accuracy in various reports. Repeated reporting and communications with the company (HDM USA) were actually received with animosity and rejection. Appeals to have the app fixed have gone unheeded for over 7 months. Senior management there were either dismissive and downright rude in their communications or totally ignored repeated bug reports and pleas to fix the issues. The Z1 Auto is great but the company, and this app, are poor.


Human Design Medical LLC
22.3 MB
Health & Fitness
Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
You must be at least 17 years old to download this app.
Frequent/Intense Medical/Treatment Information
© Human Design Medical LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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