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OSCAR, the Open Source CPAP Analysis Reporter

OSCAR, the Open Source CPAP Analysis Reporter

~ Official Download Page ~
OSCAR v1.3.0

OSCAR is PC software developed for reviewing and exploring data produced by CPAP and related machines used in the treatment of sleep apnea.

Windows 7/8/10/11
Windows 7/8/10/11

MacOSX 10.12+
MacOSX 10.12+
Linux file locations used by OSCAR have changed. We recommend removing older versions of OSCAR (including -beta and -test versions) before installation.
See the Installation Wiki for specific instructions



Raspberry Pi OS

Chromebook (see instructions)

OSCAR Installation and Data Migration Guide

OSCAR Help Wiki


OSCAR, the Open Source CPAP Analysis Reporter

This is the third major release of OSCAR.

With this release, OSCAR adds support for several new CPAP machines -- ResMed AirSense 11, Fisher & Paykel Sleepstyle, DeVilbiss BLUE (DV6) -- and improves support for others and for oximeters.

Portions of OSCAR are © 2019-2021 by The OSCAR Team

To see other languages, go to:

Changes and fixes in OSCAR 1.3.0 include:

  • [new] Add preliminary support for ResMed AirSense 11 CPAP machines.
  • [new] Add support for Fisher & Paykel SleepStyle CPAP machines.
  • [new] Add support for DeVilbiss BLUE (DV6x) CPAP machines.
  • [new] Support both Intel/AMD and ARM Chromebooks using Linux beta.
  • [new] Additional Philips Respironics devices tested and fully supported:
    • DreamStation Go Auto (500G120)
    • DreamStation Auto CPAP with A-Flex (500X140)
    • DreamStation Auto BiPAP (700X130)
    • DreamStation BiPAP AVAPS 30 (1130X200)
  • [new] Add support for DreamStation Go humidifier Target Time setting.
  • [new] Detect DreamStation 2 cards, which are still unsupported.
  • [new] Improve Somnopose import options.
  • [new] Multi-file import for non-CPAP loaders (Somnopose, Viatom, Zeo, Dreem)
  • [new] Add support for additional Viatom/Wellue filename conventions.
  • [new] Add support for unreadably low SpO2 samples on Viatom/Wellue oximeters.
  • [new] Purge Current Selected Day allows purge of each machine type separately
  • [new] Weight, BMI and Zombie history appear on Overview page
  • [new] Add Turkish signal names to RedMed loader.
  • [new] Add Bulgarian translation; update other languages.
  • [new] Add Traditional Chinese to languages available.
  • [fix] Fix AVAPS pressure settings.
  • [fix] Check for Updates no longer shows test versions to release users.
  • [fix] Rx pressures shown correctly in Profile dialog.
  • [fix] Resolve empty CPAP data card zips on macOS Big Sur.
  • [fix] Always prompt for SD card location when zipping SD card.
  • [fix] Add script to identify platform in (Linux building).
  • [fix] Correct calculation of average leak rate on Welcome page.
  • [fix] Correct installation of non-English Release Notes on Windows.
  • [fix] About/Credits page now offers Google translations to other languages.
  • [fix] User first and last name in Profile window may now have UTF-8 (non-ASCII) characters.
  • [fix] Fix crash and other problems when disabling an oximeter session on Daily page when a bookmark was present.
  • [fix] Fix rare problem of OSCAR crashing with unusual Journal file.
  • [fix] ResMed loader no longer rejects data from an earlier timezone or DST.
  • [fix] Newly entered notes no longer lost when importing new day or purging oximetry data.
  • [fix] Purge currently selected day no longer deletes bookmarks for that day.
  • [fix] Remove warning from Chromebook when importing from previously used local folder.
  • [fix] Update link to Contec drivers.
  • [fix] Fix display problems for short duration events.
  • [fix] Statistics headings will now be 99.5% or Max, depending on machine type and preference settings.
  • [fix] Mark exported Journal backup file as UTF-8.
  • [fix] Improve error message when unable to access OSCAR database.
  • [fix] Stop skipping the first 40 seconds of ResMed low-rate pressure data.
  • [fix] Correct Total Time and AHI in CSV Export when non-CPAP devices are used.
  • [fix] Fix value display and bookmark behavior with clock drift.
  • [fix] Ignore old sessions should not impact existing data.
  • [fix] Fix ocasional misordering of indexes on the Daily page.
  • [fix] Add Unclassified Apneas to the Statistics page.
  • [fix] Fix rare error on Welcome page comparing leak rate to 7-day average.
  • [fix] Fix some Y2K issues in oximetry importers.
For a list of all Release Notes in OSCAR click on Help / About OSCAR / Release Notes

Many of the changes that have occurred have resulted from input from you, the users of OSCAR. Keep them coming in.

October 2021 Release

Sourcecode: or HERE

The OSCAR team is a group of volunteer developers from the Apnea Community and are members from multiple forums and nationalities.

OSCAR is always looking for help: programmers, testers, or translators.

Send a private message to 'Gideon' on the Apnea Board Forum if you are interested. is the official CPAP and sleep apnea file-hosting site for