I can’t comment as to the pacemaker, but I have used the Kardiamobile 6L along with a loop recorder (implant), post-catheter ablation for Afib and Afl. According to my EP, AliveCor misidentified a number of arrhythmias as Afib (and that includes the overreads by their cardiologists) which were merely runs of PACs. Customer Support claimed that my missing p-waves were the result of low voltage areas in my heart and caused my Kardiamobile to read the irregularities as Afib. My EP showed me the 3-D cardiac mapping from my procedure indicating inconsequential areas of low voltage. So I would have to conclude that the inexpensive Kardiamobile is much less accurate than the quite expensive ILR!