diff --git a/logger.py b/logger.py
new file mode 100644
index 0000000..f7a6a4a
--- /dev/null
+++ b/logger.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+
+from datetime import datetime
+
+import colorama
+
+
+class Logger(object):
+    def __init__(self, module: str, datefmt: str = '%m/%d/%Y %I:%M:%S %p'):
+        colorama.init()
+        self.module = module
+        self.datefmt = datefmt
+
+    def info(self, msg: str, levelname: str = 'INFO'):
+        asctime = datetime.now().strftime(self.datefmt)
+
+        print(f'\033[92m[{asctime}] - {levelname} - {self.module} - {msg}\033[39m')
+
+    def debug(self, msg: str, levelname: str = 'DEBUG'):
+        asctime = datetime.now().strftime(self.datefmt)
+
+        print(f'\033[93m[{asctime}] - {levelname} - {self.module} - {msg}\033[39m')
+
+    def verbose(self, msg: str, levelname: str = 'VERBOSE'):
+        asctime = datetime.now().strftime(self.datefmt)
+
+        print(f'\033[96m[{asctime}] - {levelname} - {self.module} - {msg}\033[39m')
+
+    def error(self, msg: str, levelname: str = 'ERROR'):
+        asctime = datetime.now().strftime(self.datefmt)
+
+        print(f'\033[91m[{asctime}] - {levelname} - {self.module} - {msg}\033[39m')
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..ced411e
--- /dev/null
+++ b/main.py
@@ -0,0 +1,20 @@
+import sys
+
+from logger import Logger
+from rominfo.nintendo_ds import *
+
+logger = Logger('RomInfo')
+
+if __name__ == '__main__':
+    if len(sys.argv) == 2:
+        # NDS(i) - https://dsibrew.org/wiki/DSi_cartridge_header
+        if sys.argv[1].endswith('.nds'):
+            with open(sys.argv[1], mode='rb') as nds:
+                logger.info('Title           : {}'.format(nds_get_info('title', nds)))
+                logger.info('Game code       : {}'.format(nds_get_info('gamecode', nds)))
+                logger.info('Maker code      : {}'.format(nds_get_info('makercode', nds)))
+                logger.info('Unit code       : {}'.format(nds_get_info('unitcode', nds)))
+                logger.info('Encryption seed : {}'.format(nds_get_info('encryptionseed', nds)))
+                logger.info('Device capacity : {}'.format(nds_get_info('devicecapacity', nds)))
+    else:
+        logger.error('No ROM specified. App requires one argument.')
diff --git a/rominfo/nintendo_ds.py b/rominfo/nintendo_ds.py
new file mode 100644
index 0000000..d225bcc
--- /dev/null
+++ b/rominfo/nintendo_ds.py
@@ -0,0 +1,55 @@
+from math import pow
+from typing import BinaryIO
+
+
+def nds_get_info(opt: str, inf: BinaryIO):
+    match opt.lower():
+        case 'title':
+            inf.seek(0x000)
+            return inf.read(12).decode()
+        case 'gamecode':
+            inf.seek(0x00C)
+            return inf.read(4).decode()
+        case 'makercode':
+            inf.seek(0x010)
+            return _maker_lookup(inf.read(2).decode())
+        case 'unitcode':
+            inf.seek(0x012)
+            return _unit_lookup(inf.read(1))
+        case 'encryptionseed':
+            inf.seek(0x013)
+            return str(int.from_bytes(inf.read(1), 'little'))
+        case 'devicecapacity':
+            inf.seek(0x014)
+            return _capacity_lookup(int.from_bytes(inf.read(1), 'little'))
+        case _:
+            return 'Unknown'
+
+
+def _maker_lookup(code: str) -> str:
+    match code:
+        case '01':
+            return 'Nintendo ({})'.format(code)
+        case 'GD':
+            return 'Square-Enix ({})'.format(code)
+        case _:
+            return 'Unknown ({})'.format(code)
+
+
+def _unit_lookup(code: bytes) -> str:
+    if code == b'\x00':
+        return 'NDS (00h)'
+    elif code == b'\x02':
+        return 'DSi Enhanced (02h)'
+    elif code == b'\x03':
+        return 'DSi Exclusive (03h)'
+    else:
+        return 'Unknown ({})'.format(code)
+
+
+def _capacity_lookup(code: int) -> str:  # 512Mbit (67108864 bytes) (09h)
+    match code:
+        case 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12:
+            return '{} MB ({})'.format(round(128 * pow(2, code) / 1024), '{}h'.format(str(code).zfill(2)))
+        case _:
+            return 'Unknown ({})'.format(code)