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There's no doubt both of them are not resource-effective at all, especially compared to other apps made in other tech stacks.

However, both are pretty successful services, and since the parent comment expressed concern if an Electron app "would sell", these are examples that such apps are comercially viable (even with all the problems they have).

At the very least, one can use them to go to market faster and/or validate an idea. I do hope that Electron (or other similar techs) apps reach a point where they are viable long-term in terms of performance and battery-efficiency. I also dislike slow, memory-hungry and battery-draining apps as much as pretty much anyone, but one should not dismiss Electron as useless.