Evernote 10 is a rewrite in JavaScript with Electron (one of a few different JavaScript "containers") as the means to run that JavaScript code. It does this with an embedded copy of the Chromium browser as the engine, a less Google-y version of Chrome that's allowed to be used in that way. As a result developers are "held hostage" to the framework for platform support breaking beyond normal "limitations" of JavaScript within a browser, i.e. if a new OS feature comes out out something like Apple's M1 chips happen then app developers cannot do anything about it until the framework adds support.
Last I checked "mobile" builds of Electron were experimental or even unofficial at best and only Mac, Windows and Linux are first class platforms with Evernote not really interested in one of those three. IMHO something like Qt allowing native compiles on all the platforms would've been better if they wanted a single code base (for all but web app) but this is straying away from the question...
