I have been using a #PineTime for about a couple of years now and I love it. My partner is in need of a heart monitor as part of her ongoing quest to manage her very #MECFS -like #LongCovid symptoms, but I'm not convinced the heart monitor on such a smartwatch as I have would provide the accuracy she needs. Anyone aware of any (privacy-respecting #FOSS) heart monitors that also offer reliable accuracy? Have I got it wrong and in fact the PineTime would do the job just fine? #AskFedi