I was also sad to see lower score this morning than on the Dec 2018 SAT. Both math and reading went down.
@harperdoodle, my D20 used Magoosh for prep for the SAT and ACT retake. For both of the tests the area she was specifically trying to improve was the writing and grammar (so the writing/grammar part of the reading SAT and the English part of the ACT). For both the SAT and ACT when she took it the first time, that was the area she needed most improvement in. She did not use Magoosh for math at all, nor for reading comprehension. While her scores unfortunately went down in both the SAT and ACT, her sub scores for what she used Magoosh for went up. Her ACT English went from 26 to 29, and the writing and language questions score listed on the student detail on SAT went from a 30 to 33. So in that sense I can vouch that the program was helpful. She only used it for about 2-3 weeks as I signed up a bit late and she was very busy in April and May prepping for AP exams, finals, and just other stuff that make junior year very busy.
I can vouch that the score guarantee or refund from Magoosh is true. I got my ACT payment refunded within a few days of sending screen shots of both of her scores.