diff --git a/.gitignore b/.gitignore
index 55be276..92e76b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -152,3 +152,6 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+config.json
+subscriptions.db
+pid.txt
diff --git a/adsms.py b/adsms.py
new file mode 100644
index 0000000..48fdae3
--- /dev/null
+++ b/adsms.py
@@ -0,0 +1,61 @@
+import os
+import time
+import json
+import sqlite3
+import argparse
+import requests
+
+parser = argparse.ArgumentParser()
+parser.add_argument("config_file")
+args = parser.parse_args()
+
+with open(args.config_file) as f:
+    config = json.load(f)
+
+try:
+    if config["pid_file"]:
+        with open(config["pid_file"], "w+") as f:
+            f.write(str(os.getpid()))
+
+    con = sqlite3.connect(config["database"])
+
+    con.execute(
+        "CREATE TABLE IF NOT EXISTS subscriptions(phone VARCHAR, icao VARCHAR, description VARCHAR, last_seen INTEGER)"
+    )
+    con.commit()
+
+    while True:
+        response = requests.get(config["data"])
+
+        planes = response.json()["aircraft"]
+        data = {plane["hex"]: plane for plane in planes}
+
+        cur = con.execute(
+            "SELECT rowid, phone, icao, description, last_seen FROM subscriptions"
+        )
+        for sub_id, phone, icao, description, last_seen in cur.fetchall():
+            if icao in data and data[icao]["seen"] < config["max_age"]:
+                if last_seen + config["min_disappearance"] < time.time():
+                    message = f"{description}\n{config['tracker']}?icao={icao}"
+
+                    request = {
+                        "phone": phone,
+                        "message": message,
+                        "key": config["textbelt_key"],
+                    }
+
+                    resp = requests.post("https://textbelt.com/text", request)
+
+                    print(f"{phone}: {message}")
+                    print(resp.json())
+
+                con.execute(
+                    "UPDATE subscriptions SET last_seen = ? WHERE rowid = ?",
+                    (time.time(), sub_id),
+                )
+        con.commit()
+
+        time.sleep(config["delay"])
+finally:
+    if config["pid_file"]:
+        os.unlink(config["pid_file"])
diff --git a/example_config.json b/example_config.json
new file mode 100644
index 0000000..ef98b8c
--- /dev/null
+++ b/example_config.json
@@ -0,0 +1,10 @@
+{
+    "textbelt_key": "",
+    "data": "http://localhost/tar1090/data/aircraft.json",
+    "tracker": "https://globe.theairtraffic.com/",
+    "database": "subscriptions.db",
+    "pid_file": "pid.txt",
+    "max_age": 30,
+    "min_disappearance": 120,
+    "delay": 1
+}
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..f229360
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+requests