diff --git a/phototag/app.py b/phototag/app.py
deleted file mode 100644
index 1b8f82a..0000000
--- a/phototag/app.py
+++ /dev/null
@@ -1,55 +0,0 @@
-"""
-app.py
-
-Main app function file for running the program, delegating the tagging operations to different threads.
-"""
-
-import logging
-import os
-
-from google.cloud import vision
-from rich.progress import Progress, BarColumn
-from rich.traceback import install
-
-from phototag import CWD, TEMP_PATH
-from phototag.helpers import valid_extension, get_extension, convert_to_bytes
-from phototag.process import MasterFileProcessor
-
-logger = logging.getLogger("app")
-install()
-
-
-def run():
-    client = vision.ImageAnnotatorClient()
-
-    # Locate valid files
-    files = os.listdir(CWD)
-    select = list(filter(lambda file: valid_extension(get_extension(file)), files))
-
-    if len(select) == 0:
-        logger.fatal("No valid files located.")
-        return
-    else:
-        logger.info(f"Found {len(select)} valid files")
-
-    # Create the 'temp' directory
-    if not os.path.exists(TEMP_PATH):
-        logger.info("Creating temporary processing directory")
-        os.makedirs(TEMP_PATH)
-
-    try:
-        with Progress("[progress.description]{task.description}", BarColumn(bar_width=None),
-                      "[progress.percentage]{task.percentage:>3.0f}%") as progress:
-            mp = MasterFileProcessor(select, 10, convert_to_bytes("1780 KB"), True, client=client, progress=progress)
-            logger.info('MasterFileProcessor created.')
-            mp.load()
-            logger.info('Finished loading/starting initial threads.')
-            mp.join()
-            logger.info('Finished joining threads, now quitting.')
-
-    except Exception as error:
-        logger.error(str(error))
-        raise
-    finally:
-        os.rmdir(TEMP_PATH)
-        logger.info("Temporary directory removed.")