diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/db/BaseRealmHelper.kt b/app/src/main/kotlin/jackall/overlaymulticounter/db/BaseRealmHelper.kt
new file mode 100644
index 0000000..af0f1f0
--- /dev/null
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/db/BaseRealmHelper.kt
@@ -0,0 +1,18 @@
+package jackall.overlaymulticounter.db
+
+import io.realm.Realm
+import io.realm.RealmModel
+import io.realm.RealmResults
+
+/**
+ * Created by matsumoto_k on 2017/11/08.
+ */
+abstract class BaseRealmHelper<T : RealmModel> {
+    protected val realm by lazy { Realm.getDefaultInstance() }
+    abstract fun insert(realmObject: T)
+    abstract fun update(realmObject: T)
+    abstract fun findAll(): RealmResults<T>
+    fun close() {
+        realm.close()
+    }
+}
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