> I made one of these too, but a minimal/fast HTML/CSS/JS web app Same story here. But not sure if yours had a backend. Mine did not have one and stored everyt

> I made one of these too, but a minimal/fast HTML/CSS/JS web app Same story here. But not sure if yours had a backend. Mine did not have one and stored everything on the browser datastore, but could export it to some free json hosting service after encrypting and compression so that it can be synced to other devices and used from them as well. Was not aware of anything that did the same, thought it would be useful (mostly because it would be totally free to use, could be accessed from multiple devices and respected user privacy) and shared here couple of days back. Zero interest! Ha ha. At least I didn't spend a lot of resources on it and made it for my own use. It have been working well for me for many years.