I’ve been using the Things3 app for a long period of time and would like to know if its possible to sync todos between both apps?
Agenda can create reminders in the Reminders app of Apple. I have heard that Things can also be configured to take new reminders out of Reminders app, so in theory you can link the two apps that way.
There is no direct integration between the two at this point.
Your best option is to turn on Reminders import in the things app so they show up there instead. However this wont sync over to Agenda