Right now, it’s not possible to create your own unique reminder in the Clue app.
Depending on what kind of reminder you’d like to create, you could repurpose the tracking reminder to your needs. Just customize the message to what you’d like to be notified about, and set the schedule to either daily, weekly, fortnightly, or monthly.
If there’s a certain type of reminder you’d love to see, leave us your feedback here.