I like Standard Notes, but ended up subscribing to a different service because I couldn't get comfortable with the Android app's UI – it was something as silly as finding the editor buttons to be too tiny for my fingers. I constantly pressed the wrong ones. And 90% of my note taking is done on Android. A user suggested that I could make my own custom theme and increase button sizes that way, but I couldn't figure out how to do that. If someone knows how to do it, I'd appreciate a ping. 😊 I filed a feature request with Standard Notes.
I appreciate that they support security keys. Although I wish they'd do a Bitwarden and offer that option to users of the free version as well.
To be fair, Standard Notes has a very generous refund policy. I subscribed to the most expensive plan and asked for a refund within the limit of three months, and was quickly given a full refund, without even being deducted for the two months I had spent using their service. Very happy with that.