How to Create a Python Chatbot on Android Using PyDroid 3

In this step-by-step tutorial, you’ll learn how to create a simple yet powerful chatbot using Python — all on your Android phone using the PyDroid 3 app. This chatbot will not only respond to your questions but also learn from you and remember responses. Perfect for beginners in coding and mobile development!

🎯 What You'll Learn

• How to install and use PyDroid 3
• Write a simple chatbot in Python
• Make your chatbot learn new replies
• Save and load data using JSON

📱 Why Use PyDroid 3?

PyDroid 3 allows you to run Python code directly on your Android device. It’s beginner-friendly, works offline, and is great for learning Python without needing a computer. You’ll write and run Python files just like you would on a PC.

🔧 Features of This Chatbot

• Replies to known inputs
• Asks to learn unknown responses
• Stores replies in a JSON file
• Thanks the user for teaching it
• Asks for the next question smoothly

🧠 Python Code for the Chatbot

import json

# Load previous data or start fresh
try:
    with open("bot_data.json") as f:
        data = json.load(f)
except:
    data = {}

print("Bot: Hi! Ask me anything.")

while True:
    msg = input("You: ").lower()
    if msg in data:
        print("Bot:", data[msg])
    else:
        print("Bot: I don't know that. Teach me!")
        reply = input("Your reply: ")
        data[msg] = reply
        with open("bot_data.json", "w") as f:
            json.dump(data, f)
        print("Bot: Thanks for correcting me! What’s your next question?")

💾 How to Run It

1. Open PyDroid 3 on your phone
2. Tap the editor icon and paste the code
3. Save the file as chatbot.py
4. Run the script and start chatting

🧪 Code Explanation

• json.load() loads saved chatbot data
• input() gets user messages
• The chatbot stores questions and answers in a Python dictionary
• json.dump() saves the new info so the bot remembers next time

💡 How to Improve This Project

• Use voice input and text-to-speech
• Connect to real AI services like ChatGPT API
• Use regular expressions to match similar messages
• Make a GUI version using Kivy or tkinter (if on PC)

📺 Watch the Video Tutorial

🔎 Searching for?

• How to make a chatbot in Python
• Python chatbot project for beginners
• Python chatbot app Android
• How to build AI chatbot on phone
• Chatbot in PyDroid 3 step by step

💬 Final Thoughts

This chatbot is just the beginning of what you can build with Python on your phone. As you learn more, you can expand it with advanced features. If you enjoyed this tutorial, check out more projects and subscribe to my YouTube channel!

✓✓✓✓✓ What feature should we add next? Drop your ideas in the comment section below!