diff --git a/sync/service/recur.go b/sync/service/recur.go
new file mode 100644
index 0000000..f01de48
--- /dev/null
+++ b/sync/service/recur.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"log/slog"
+	"time"
+
+	"go-mod.ewintr.nl/planner/item"
+)
+
+type Recur struct {
+	repo   Recurrer
+	logger *slog.Logger
+}
+
+func NewRecur(repo Recurrer, interval time.Duration, logger *slog.Logger) *Recur {
+	r := &Recur{
+		repo:   repo,
+		logger: logger,
+	}
+	go r.run(interval)
+
+	return r
+}
+
+func (r *Recur) run(interval time.Duration) {
+	ticker := time.NewTicker(interval)
+
+	for range ticker.C {
+		if err := r.recur(); err != nil {
+			r.logger.Error("could not recur", "error", err)
+		}
+	}
+}
+
+func (r *Recur) recur() error {
+	items, err := r.repo.RecursBefore(time.Now())
+	if err != nil {
+		return err
+	}
+	for _, i := range items {
+		if err := r.repo.RecursNext(i.ID, NewNext(i.Recurrer, i.RecurNext)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func NewNext(r *item.Recur, old time.Time) time.Time {
+	day, _ := time.ParseDuration("1d")
+	test := old.Add(day)
+	for {
+		if r.On(test) || test.After(time.Date(2500, 1, 1, 0, 0, 0, 0, time.UTC)) {
+			return test
+		}
+		test.Add(day)
+	}
+}