onecalendar.nl Reviews 

It's a nice agenda, but gets one star for the mandatory integration with other US-based third party agendas.

I, like so many Europeans (and more Europeans every day) am pulling away from US-based systems. First I was so glad to find a Dutch agenda company, and I even paid for the app. But there is no way to use this agenda without integrating it with other agendas, which are mostly from US big tech - and therefore increasingly compromised by US politics. European companies have to start waking up to the fact that the US is a dirty state, that Big tech is an enemy, and that European citizens increasingly want to cut ties. With Google, Yahoo, etc our data is simply not safe, I don't feel comfortable to be part of their systems anymore - and hate that I am forced to keep the connection through apps like One Calendar.

So One Calendar: wake up to 2026, and start offering your users a way to disconnect from US tech: please, pretty please, with a cherry on top.

Not really a website to use, but a great agenda app! Works on Android and Apple and combines all our selected agenda's (real-time) in our family. Having it for years now, and still being updated. It has all kind of theme settings and overviews. Love it.

Easiest way to see your mobile device and windows schedule in one place.