I made a similar version of this some time ago. www.timeblocker.dev If there's interest I might expand it. One of the features I'm proud of is that it's enti

I made a similar version of this some time ago. www.timeblocker.dev If there's interest I might expand it. One of the features I'm proud of is that it's entirely client-side encrypted. The keys are stored locally, the server cannot decrypt your data.