diff --git a/README.md b/README.md
index baa294a..7aaf2b5 100644
--- a/README.md
+++ b/README.md
@@ -23,17 +23,29 @@ Some other features include:
 - The Chinese speaker supports `mixed Chinese and English`.
 - Fast enough for `CPU real-time inference`.
 
-## Install on Linux
+## Install on Linux or macOS
+
 ```bash
 git clone git@github.com:myshell-ai/MeloTTS.git
 cd MeloTTS
 pip install -e .
 python -m unidic download
 ```
-We welcome the open-source community to make this repo `Mac` and `Windows` compatible. If you find this repo useful, please consider contributing to the repo.
+
+We welcome the open-source community to make this repo `Windows` compatible. If you find this repo useful, please consider contributing to the repo.
 
 ## Usage
 
+An unofficial [live demo](https://huggingface.co/spaces/mrfakename/MeloTTS) is hosted on Hugging Face Spaces.
+
+### WebUI
+
+The WebUI supports muliple languages and voices. First, follow the installation steps. Then, simply run:
+
+```bash
+python app.py
+```
+
 ### English with Multi Accents
 ```python
 from melo.api import TTS
@@ -42,8 +54,8 @@ from melo.api import TTS
 speed = 1.0
 
 # CPU is sufficient for real-time inference.
-# You can also change to cuda:0
-device = 'cpu'
+# You can set it manually to 'cpu' or 'cuda' or 'cuda:0' or 'mps'
+device = 'auto' # Will automatically use GPU if available
 
 # English 
 text = "Did you ever hear a folk tale about a giant turtle?"
@@ -156,7 +168,7 @@ model.tts_to_file(text, speaker_ids['KR'], output_path, speed=speed)
 ```
 
 ## License
-This library is under MIT License. Free for both commercial and non-commercial use.
+This library is under MIT License, which means it is free for both commercial and non-commercial use.
 
 ## Acknowledgement
 This implementation is based on several excellent projects, [TTS](https://github.com/coqui-ai/TTS), [VITS](https://github.com/jaywalnut310/vits), [VITS2](https://github.com/daniilrobnikov/vits2) and [Bert-VITS2](https://github.com/fishaudio/Bert-VITS2). We appreciate their awesome work!
diff --git a/app.py b/app.py
index b7d2650..093738e 100644
--- a/app.py
+++ b/app.py
@@ -7,7 +7,7 @@ print("Make sure you've downloaded unidic (python -m unidic download) for this W
 from melo.api import TTS
 speed = 1.0
 import tempfile
-device = 'cuda' if torch.cuda.is_available() else 'cpu'
+device = 'auto'
 models = {
     'EN': TTS(language='EN', device=device),
     'ES': TTS(language='ES', device=device),
diff --git a/melo/api.py b/melo/api.py
index 6e236f9..3727ae2 100644
--- a/melo/api.py
+++ b/melo/api.py
@@ -8,6 +8,7 @@ import torchaudio
 import numpy as np
 import torch.nn as nn
 from tqdm import tqdm
+import torch
 
 from . import utils
 from . import commons
@@ -19,8 +20,12 @@ from .download_utils import load_or_download_config, load_or_download_model
 class TTS(nn.Module):
     def __init__(self, 
                 language,
-                device='cuda:0'):
+                device='auto'):
         super().__init__()
+        if device == 'auto':
+            device = 'cpu'
+            if torch.cuda.is_available(): device = 'cuda'
+            if torch.backends.mps.is_available(): device = 'mps'
         if 'cuda' in device:
             assert torch.cuda.is_available()
 
diff --git a/requirements.txt b/requirements.txt
index 4a85b5c..1ec5e6c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,6 +23,6 @@ unidecode==1.3.7
 pypinyin==0.50.0
 cn2an==0.5.22
 jieba==0.42.1
-gradio==3.48.0
+gradio
 langid==1.1.6
 tqdm
\ No newline at end of file