diff --git a/package.json b/package.json
index e8c5001..791c806 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,7 @@
     "messageKeys": [
         "PKJS_READY",
         "PKJS_PAVLOK_ENABLE",
+        "PKJS_PAVLOK_ZAP_INTERVAL",
         "PKJS_PAVLOK_ZAP",
         "PKJS_AWARENESS_TIME_GAP",
         "PKJS_AWARENESS_TIME_LIMIT",
diff --git a/src/c/main.c b/src/c/main.c
index 1e8a1a7..e65bf24 100644
--- a/src/c/main.c
+++ b/src/c/main.c
@@ -62,6 +62,8 @@ static uint8_t s_solution_indices[3] = {8, 8, 8};
 static uint8_t s_selected_indices[3] = {9, 9, 9};
 static uint8_t s_awareness_countdown_int = 0;
 static char s_awareness_countdown_buf[4];
+static uint8_t s_zap_repeat_countdown = 0;
+static bool s_hide_countdown = true;
 static uint32_t s_vibe_segments[5];
 static VibePattern s_vibe_pattern;
 
@@ -189,9 +191,10 @@ static void apply_uint8_from_tuple(DictionaryIterator *iter, uint32_t key, void
 static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 	Tuple *ready_tuple = dict_find(iter, MESSAGE_KEY_PKJS_READY);
 	if (ready_tuple) {
-		return; // TODO use ready signal better
+		return;
 	}
 	apply_uint8_from_tuple(iter, MESSAGE_KEY_PKJS_PAVLOK_ENABLE, &settings.PavlokEnabled);
+	apply_uint8_from_tuple(iter, MESSAGE_KEY_PKJS_PAVLOK_ZAP_INTERVAL, &settings.PavlokIntervalSeconds);
 	apply_uint8_from_tuple(iter, MESSAGE_KEY_PKJS_AWARENESS_TIME_GAP, &settings.AwarenessTimeGapMinutes);
 	apply_uint8_from_tuple(iter, MESSAGE_KEY_PKJS_AWARENESS_TIME_LIMIT, &settings.AwarenessTimeLimitSeconds);
 	apply_uint8_from_tuple(iter, MESSAGE_KEY_PKJS_AWARENESS_NUDGE_ENABLE, &settings.AwarenessNudgeEnabled);
@@ -292,10 +295,19 @@ static void awareness_alarm_seconds_handler(struct tm *tick_time, TimeUnits unit
 		snprintf(s_awareness_countdown_buf, sizeof(s_awareness_countdown_buf), "%03u", s_awareness_countdown_int);
 		text_layer_set_text(s_countdown_txt_layer, s_awareness_countdown_buf);
 		if (s_awareness_countdown_int == 0) {
-			send_zap(); // TODO implement repeat interval
+			send_zap();
+			s_zap_repeat_countdown = settings.PavlokIntervalSeconds;
 		}
 	} else {
-		// TODO flash countdown txt layer every second
+		if (s_zap_repeat_countdown > 0) {
+			s_zap_repeat_countdown--;
+			if (s_zap_repeat_countdown == 0) {
+				send_zap();
+				s_zap_repeat_countdown = settings.PavlokIntervalSeconds;
+			}
+		}
+		layer_set_hidden(text_layer_get_layer(s_countdown_txt_layer), s_hide_countdown);
+		s_hide_countdown = !s_hide_countdown;
 		vibes_enqueue_custom_pattern(s_vibe_pattern);
 	}
 }
@@ -617,6 +629,7 @@ static void alarm_window_load() {
 	if (s_alarm_reason == WAKE_AWARENESS_ALARM) {
 		text_layer_set_font(s_countdown_txt_layer, s_font_lecoish_small);
 		s_awareness_countdown_int = settings.AwarenessTimeLimitSeconds;
+		s_zap_repeat_countdown = 0;
 		snprintf(s_awareness_countdown_buf, sizeof(s_awareness_countdown_buf), "%03u", s_awareness_countdown_int);
 		text_layer_set_text(s_countdown_txt_layer, s_awareness_countdown_buf);
 	} else {
@@ -993,6 +1006,7 @@ static void init() {
 	} else {
 		settings.TutorialEnabled = true;
 		settings.PavlokEnabled = false;
+		settings.PavlokIntervalSeconds = 10;
 		settings.AwarenessTimeGapMinutes = 9;
 		settings.AwarenessTimeLimitSeconds = 30;
 		settings.AwarenessNudgeEnabled = true;
diff --git a/src/c/settings.h b/src/c/settings.h
index 2bec52c..1706a46 100644
--- a/src/c/settings.h
+++ b/src/c/settings.h
@@ -12,6 +12,7 @@
 typedef struct AppSettings {
     bool TutorialEnabled;
     bool PavlokEnabled;
+    uint8_t PavlokIntervalSeconds;
     uint8_t AwarenessTimeGapMinutes;
     uint8_t AwarenessTimeLimitSeconds;
     uint8_t AwarenessNudgeEnabled;
diff --git a/src/pkjs/config.js b/src/pkjs/config.js
index 2f8e7af..796d1d8 100644
--- a/src/pkjs/config.js
+++ b/src/pkjs/config.js
@@ -34,6 +34,16 @@ module.exports = [
                 "step": 5,
                 "label": "Zap Intensity"
             },
+            {
+                "id": "pavlok_zap_interval",
+                "type": "slider",
+                "messageKey": "PKJS_PAVLOK_ZAP_INTERVAL",
+                "defaultValue": 10,
+                "min": 1,
+                "max": 60,
+                "step": 1,
+                "label": "Zap Repeat Interval"
+            },
             {
                 "id": "pavlok_test_button",
                 "type": "button",
diff --git a/src/pkjs/customClay.js b/src/pkjs/customClay.js
index 9f384a1..3d5d0a0 100644
--- a/src/pkjs/customClay.js
+++ b/src/pkjs/customClay.js
@@ -8,10 +8,12 @@ module.exports = function (minified) {
         if (this.get()) {
             clayConfig.getItemById('pavlok_api_key').show();
             clayConfig.getItemById('pavlok_zap_intensity').show();
+            clayConfig.getItemById('pavlok_zap_interval').show();
             clayConfig.getItemById('pavlok_test_button').show();
         } else {
             clayConfig.getItemById('pavlok_api_key').hide();
             clayConfig.getItemById('pavlok_zap_intensity').hide();
+            clayConfig.getItemById('pavlok_zap_interval').hide();
             clayConfig.getItemById('pavlok_test_button').hide();
         }
     }
@@ -24,10 +26,8 @@ module.exports = function (minified) {
             reason: 'Trigalarm Test'
           }
         });
-
         const xhr = new XMLHttpRequest();
         xhr.withCredentials = true;
-
         xhr.open('POST', 'https://api.pavlok.com/api/v5/stimulus/send');
         xhr.setRequestHeader('accept', 'application/json');
         xhr.setRequestHeader('content-type', 'application/json');
diff --git a/src/pkjs/index.js b/src/pkjs/index.js
index 91b571f..e03f260 100644
--- a/src/pkjs/index.js
+++ b/src/pkjs/index.js
@@ -23,10 +23,8 @@ function callAPI(apiKey, zap_intensity) {
         reason: 'Trigalarm'
       }
     });
-
     const xhr = new XMLHttpRequest();
     xhr.withCredentials = true;
-
     xhr.open('POST', 'https://api.pavlok.com/api/v5/stimulus/send');
     xhr.setRequestHeader('accept', 'application/json');
     xhr.setRequestHeader('content-type', 'application/json');