Syrem

With this app you can create Reminders. You can use realistic expression like "in 3 days at 14 o'clock" or "every Tuesday" to set when you want to be reminded.

Additionally, the app can synchronize your reminders with other devices - completly End-to-End encrypted. Currently Linux, Windows, MacOs and Android are supported as platform. Downloads can be found on the homepage https://github.com/Skycoder42/Syrem.