tmrl

Hello, This is my first time in this forum, and just started using SleepyHead today. I am shocked that the AHI readings I got from Sleepy Head (SH) are significantly lower than the ones I got from My Air ( MA ). Am I comparing apple to apple, or Is it something wrong with my data or my SD card ? Here are my AHI readings for the past 7 days :

Mar 7 : SH 2.1; MA 11.3; Mar 6 : 1.18 vs 8.8 ; Mar 5 : 1.53 vs 10.7 ; Mar 4 : 1.28 vs 11.3 ; Mar 3 : 4.7 vs 12.1 ; Mar 2 : 3.21 vs 19.6; Mar 1 : 0.74 vs 6.4

Machine Information and Changes to Prescription settings are correct.

In March 2017, My sleep Study showed severe apnea with AHI of 77.2 per hour. I have been using the Resmed Airsense 10 Autoset ( Full face mask ) since April 2017. My Resmed Airview Compliance Report for the period of 10/24/2017 - 01/11/2018 showed AHI of 11.3, and thus I went to see my sleep doctor again a couple weeks ago. The sleepyhead AHI average for those 3 months showed below 2. I am totally confused !!! Shall I use a different software to take a look ? Pls help ! Thank you so much !