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Artificial intelligence is profoundly transforming the way web applications are designed. Thanks to the power of GPT-4 and the flexibility of Bubble, it is now possible to create a smart web app, efficient and 100% code-free. Whether you are an entrepreneur, startup or digital professional, this practical guide will guide you step by step to:
· Prototype a functional application in just a few days,
· Integrate GPT-4 in order to take advantage of generative AI in your functionalities,
· Automate complex business processes effectively,
· Deploy a tailor-made, fast and economical solution.
👉 This guide is especially aimed at:
• The young businesses who want to launch a functional MVP in record time,
• The entrepreneurs wishing to automate their activity without an excessive budget,
• Product managers (product manager) eager to integrate artificial intelligence into their solutions.
Chez Scalapp, we support precisely this type of project combining AI, productivity and no-code development. Ready to find out how to turn your idea into a smart digital product? Follow the guide 🚀.
Before embarking on the creation of a Web-app with GPT-4 and Bubble, it is essential to properly frame your project. Start by clearly identifying the functional needs and the contributions that AI can offer to your application.
• Design a Smart chatbot able to accurately answer user questions (customer support, personalized recommendations).
• Automatically generate textual content like articles, emails, or marketing scripts.
• Analyzing and summarizing complex data, ideal for extracting insights from documents or files.
• Automate business workflows such as processing forms or sorting incoming information.
🧠 Case in point: a recruitment application that uses GPT-4 to analyze resumes and generate summary summaries for recruiters.
The choice between GPT-3.5 and GPT-4 depends mainly on your budget and the complexity of your needs. GPT-3.5 is more economical and fast, but less efficient on long contexts or complex tasks. GPT-4, on the other hand, offers more accurate answers, more advanced reasoning, and better context management — ideal for critical or data-oriented applications.
➡️ Our advice: Start with GPT-3.5 to test your prototype, then migrate to GPT-4 if your web app requires a higher level of quality.
Chez Scalapp, we help our customers make these strategic choices based on their use case, budget and goals. Our expertise allows you to move forward quickly, without compromising on the performance of your application.
Once your idea is well defined, it's time to create the user interface. Bubble allows you to build an UI without coding, while maintaining great freedom of customization. This is where we will structure exchanges between the user and artificial intelligence.
To get started, go to Bubble.io, then click “New App”. You can start from a existing template if you are just starting out, or create an application from scratch for maximum flexibility.
The aim is to make the user experience smooth and intuitive. Here are the essential elements to integrate into your main page:
• One text field in which the user will enter their question or request.
• A “Send” button to launch the request to the GPT API.
• One display area intended to show the response generated by GPT-4.
For optimize the design and the fluidity of your interface:
• Install the plugin Toolbox to enrich your components with dynamic elements.
• Activate Responsive mode to ensure optimal display on mobile, tablet and desktop.
Create a table named “Conversations” to record exchanges between the user and the AI. Add the following fields:
• userInput — corresponds to the input made by the user.
• AirResponse — contains content generated by artificial intelligence.
• Timestamp — the date and time of the exchange.
This will allow you to keep a history, useful both for the analysis, optimization or future training of AI.
💡 Scalapp tip: our team can help you create a Bubble interface that is both powerful and pleasant to use. We make it a point of honor to design user experiences that are clear, modern and aligned with your project.
It is here that The magic of artificial intelligence enter the scene. For your web app to chat with GPT-4, you need to set up a secure API connection between Bubble and OpenAI.
Start by going to platform.openai.com to create your account (if you haven't already done so).
Then follow these steps:
1. Go to the tab “API Keys”.
2. Press” Generate new secret key ” to get your secure ID.
3. Copy your key carefully.
⚠️ Never share this key, even by mistake: it gives access to your quota and your data.
With the API Connector plugin, Bubble makes it easy to add calls to external services.
Here's how to set up the call to GPT-4:
1. See you in Plugins → API Connector.
2. Create a new API:
• Name : OpenAI GPT-4
• Method : POST
• URL : https://api.openai.com/v1/chat/completions
3. Add the Headers following:
- Authorization: Bearer YOUR_API_KEY
- Content Type: application/json
4. Fill in body of the request like this:
JSON
CopyEdit
{
“modelo”: “gpt-4",
“messages”: [{"role”: “user”, “user”, “content”: “Hello"}],
“temperature”: 0.7
}
• temperature: defines the level of creativity or spontaneity of the response.
- 0 = very accurate and factual answers.
- 1 = freer and more inventive answers.
• Max_Tokens : sets the maximum number of tokens (words) that the response can contain.
🧠 Scalapp advice: The API configuration may seem technical at the beginning, but once well structured, it becomes a great tool for automating and enriching your functionalities. At Scalapp, we support project leaders for integrate AI safely and without friction.
It is now that your application becomes interactive and intelligent. Bubble workflows make it possible to automatically manage interactions between the user and GPT-4. This is where you create a true conversational experience.
Here's how to structure your workflow in Bubble:
1. Trigger event : the user presses the “Send” button.
2. Logical sequence of actions :
O Call the OpenAI API using text entered by the user.
O Show answer of GPT-4 in a dynamic text box.
O Record conversation in your database (useful for follow-up or subsequent analysis).
In concrete terms, this means:
· When the “Send” button is clicked
→ The API call to GPT-4 is launched.
→ The response field is updated with response.choices [0] .message.content.
→ A new entry is created in the “Conversations” table.
· Add a charging indicator (spinner) to inform the user that the AI is processing their request.
· Anticipate mistakes : For example, show a clear message if the OpenAI API is temporarily inaccessible.
· Improve mobile responsiveness by testing the experience on various screens.
💡 Scalapp tip : at Scalapp, we use these intelligent workflows to automate complex tasks, such as personalized recommendations, document analysis, or specialized virtual assistants. It's a quick and easy way to turn a simple interface into an AI-powered app.
Is your web app functional? It's time to test your application in a real situation, optimize its operation, and then publish it.
Above all, check that your application meets user expectations and that the AI reacts as expected. Some cases to watch out for are:
Do not hesitate to test your application in different browsers and on mobile to ensure a smooth user experience.
🎯 Scalapp, specialized in no-code development and AI integration, is already supporting several startups and companies in the deployment of high-performance applications with Bubble + GPT-4. If you want to go further or entrust all or part of your project to an experienced team, we are there for you.
🔒 No, GPT-4 is not available for free in the long term.
👉 However, OpenAI offers a $5 welcome credit upon registration. This makes it possible to test the GPT API (via Playground or in connection with Bubble) without commitment. Perfect for experiencing your first AI integration at no cost!
💪 Yes, Bubble is perfectly capable of supporting complex and large-scale applications.
📌 Concrete example: PayFit, a French scale-up in the HR field, started on Bubble with more than 10,000 active users. With a good database architecture and optimizations (conditional groups, element reuse, etc.), Bubble can handle significant volumes of traffic and data.
🧩 For more flexibility on the server side or native mobile integration, choose the following solutions:
· FlutterFlow : mobile-oriented no-code tool.
· Firebase : real-time database + server functions (Cloud Functions).
Together, they offer a maximum technical flexibility, while remaining accessible to low-code and no-code developers.
Here are the 5 essential steps to create a web application integrating GPT-4 with Bubble:
1. 🧠 Clearly identify your AI use cases (e.g. chatbot, resume summary, HR assistant, etc.).
2. 🎨 Create the interface on Bubble (thanks to its drag-and-drop visual editor).
3. 🔗 Connect GPT-4 via API (using Bubble's API Connector plugin).
4. ⚙️ Automate workflows (research, response, formatting...).
5. 🚀 Test, Optimize, and Deploy (Bubble allows you to switch to production in one click).
Start for free on Bubble.io and OpenAI.com
Do you need support to structure your idea, optimize your workflows or connect GPT?
👉 Contact our team for a personalized audit : we analyze your project, your objectives and your technical constraints to help you succeed.
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