This is a great post. I too use Simplenote as my primary application for notes. Though I've been using it for years, there's lots to be desired, mainly more features which is against it's "simple" paradigm. The main element that's keeping me with the platform is that it's cross-platform and its ability to sync across those multiple devices.
The only similar replacement I found was Standard Notes, but the editor itself isn't all that great. It's also got great privacy and encryption. It has syncing and cross-platform support, but the desktop and mobile applications are finicky.
The only thing I want out of Simplenote is less-ugly rendering. Other than that, it's perfect.
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