StandardNotes works as described: it’s useful, simple, solid, extensible/customizable, secure, user-friendly, clean looking, and fun. Think, perhaps, of the cleanness and exportability of Simplenote/Bear + web access + rock-solid stability + unimpeachable security. (Plus more.)
Also the developer is patient, friendly, and incredibly helpful. I had a non-app, non-workflow related problem related to registration/billing that developer helped me solve through a string of direct, prompt, friendly, and helpful emails over the course of a month.
Now more than ever are security and privacy important. Now more than ever are apps most useful when they are simple, extensible, and allow for transparent data export. And the pricing model is transparent, fair, reasonable, and seemingly sustainable. Now more than ever should we support apps like this.