TL;DR: Prototypes range from simple sketches to functional apps and help validate ideas before heavy investment, but modern tools like Bubble allow you to build a real, production-ready app from the start instead of creating throwaway prototypes. The key steps are research your users, sketch core functionality, choose scalable tools, design actual workflows, and continuously test and iterate to turn your initial version directly into your final product.
Building digital products often turns into a slow, resource-draining process, especially when you’re not sure if what you’re building is what customers actually need.
For someone running a lean startup, investing significant time and resources into a product that misses the mark is a painful setback. And traditional development approaches create technical debt when you don’t understand what you’re building and can’t easily iterate.
One solution: Build a prototype. In this guide, we’ll walk through exactly how to create a prototype, from initial research through testing and iteration. We’ll also cover the different types of prototypes and how rethinking the traditional prototyping process can help you build faster. With Bubble, you can build a real app that evolves from prototype to production.
What are prototypes?
Prototypes are early versions of your product that let you test ideas, validate functionality, and communicate your vision before investing heavily in features customers may not want. They range from simple sketches to interactive models that work like the real thing. Whether you’re building a digital app or physical product, prototypes help you avoid costly mistakes by catching problems early.
Why is prototyping important?
For startup founders building web apps, prototypes deliver massive benefits:
- Test and validate ideas sooner
- Reduce wasted resources during development
- Speed up build times and product development
- Enable quicker product launches
- Communicate your vision clearly to teams and investors
But at Bubble, we think about this differently. Instead of building throwaway prototypes, Bubble lets you vibe code without the code to build real apps that launch to production.
Types of prototypes
Before diving into the creation process, it helps to understand the different types of prototypes available. Each serves a distinct purpose, and choosing the right one depends on what you’re trying to learn or validate.
Feasibility prototypes
Behind-the-scenes tests that answer one question: is this technically possible? Key characteristics:
- Purpose: De-risk development before committing resources
- Audience: Internal teams only
- Focus: Technical validation, not user experience
Low-fidelity prototypes
Quick visual representations that map out core concepts. Examples include:
- Format: Pen-and-paper sketches or digital wireframes
- Goal: Test basic user flows and concepts
- Speed: Fast to create and iterate
High-fidelity prototypes
Detailed mockups that look and feel close to the final product. Perfect for:
- User testing: In-depth feedback on real interactions
- Stakeholder demos: Making your vision feel tangible
- Investor pitches: Securing buy-in with realistic previews
Live-data prototypes
A functional app connected to real data. Perfect for:
- Real user testing: Validate with actual interactions and data
- Continuous iteration: Evolve directly into your production app
- Faster launches: Skip rebuilding, because your prototype IS your product
With Bubble, you can build this type from the start, test with real interactions, and evolve your prototype into your final product without throwing anything away.
How to create a prototype for your web app
It’s time to get into the weeds of how to build your own prototype for a web app. If you’re looking for a way to make a prototype for a mobile app, check out our guide to prototyping mobile apps instead.
Otherwise, read on for a simple, step-by-step process to build an effective prototype.
1. Start with research
No matter what type of prototype you’re building, starting with your users is going to be the most effective and efficient strategy.
After all, you want to create a product that reflects what your target market actually needs, not just what your team assumes.
Your research should explore:
- Target audience: Who are they and what do they need?
- Market landscape: What solutions already exist?
- Competitive gaps: Where do current tools fall short?
Once you understand your audience’s biggest problem, you can define how your product solves it better than existing options.
2. Sketch out your design
At this stage, keep things simple. Focus on core functionalities and the user journey, and avoid getting bogged down with high-fidelity details too early. Founders who move fast and iterate based on real feedback tend to build more successful products.
Start with a sketch on a napkin or a basic wireframe. For web apps, focus on key elements such as:
- Core web pages needed to complete the primary task
- Basic design of UX and UI
- The databases, logic, and workflows needed to complete the primary tasks
With Bubble AI, you can skip manual sketching entirely. Just describe what you want to build, and Bubble AI generates a complete working app, including UI, workflows, and database, all in minutes. You can then refine it using the visual editor or continue working with the Bubble AI Agent (beta).
3. A prototyping tool can do the heavy lifting for you
When choosing a tool to build your app, you want to choose the right tool for the job. Ideally, this is a prototyping tool that can:
- Do the heavy lifting for you from the start, and
- Scale with you as you grow
For example, hard-coding a prototype is difficult and time-consuming. You build everything from scratch and iteration is complex.
“In the beginning, don’t waste time and resources on custom designs. Instead, use pre-built components that meet your needs.” — Arthur Kieffer, Founder and CTO at Cube
However, many prototyping software options lack real functionality, meaning they can’t scale with you. But Bubble AI generates complete apps in minutes with UI, workflows, and databases already built. As you grow and evolve from your prototype, you’ll refine your app and scale from your first users to millions without switching platforms. You can also use pre-built UI components and templates when you need them.
| Low-fidelity prototypes | High-fidelity prototypes |
|---|---|
| Limited to static wireframes and pages | More closely resemble your actual product |
| Illustrate the look and feel of your product (more design-focused) | Illustrate features and functionality (may or may not actually be functional) |
| Usually provide little or no information about navigation, animations, or page interactions | Can include audio, video, animations, and even workflows and basic logic and conditions to simulate your actual product |
| Better for early-stage idea visualization and validation | Better for user testing and investor demonstrations |
| Most helpful for communicating ideas, aligning on product direction, and wireframing for your design and dev teams | Most helpful for testing user experience and functionality, ensuring feasibility and further iteration |
Once you know what type of prototype you need, choose a tool that can support you (ideally, long-term) and get ready to start building. Not sure where to start? Check out our list of the best prototyping tools to pick one that’s right for your needs.
4. Design your prototype
Focus on designing the interactions, user flows, and functionality that matter to your users.
If you’ve already started your design in another tool, like Figma, you can import it from Figma to Bubble in just a few clicks to jump right to adding functionality and features.
“The most important step in building a prototype is making sure it accurately represents the key functionalities and user flows your customers need. This means focusing on interaction design and user experience to validate your concept with real users, then iterating quickly based on their feedback—all within the same app that will go to production.
Your initial version doesn’t need to have the most beautiful design or many bells and whistles, but it should be representative enough that the feedback you get is relevant and actionable.” — Rodrig Naska, Product Lead at Revido
Whether you build out actual functionality (as on Bubble) or simply input animations to demonstrate it, make sure you are able to accurately navigate through and have basic interactions with your web app before moving to the testing stage.
5. Test, test, test
User testing is important at all phases of product development, but especially so once you have a functional—or semi-functional—prototype in hand.
At this point, you can get valuable user feedback. From there, iterate on your prototype to improve your product.
Keep in mind there are tons of different ways to go about testing your prototype. The two main distinctions to keep in mind: moderated vs. unmoderated user testing.
Moderated user testing can happen sooner in the testing process, since you can walk users through your product “in a lab,” even if it isn’t functional. But, unmoderated testing is more valuable. You can get more information on how users naturally try to accomplish tasks with your product.
Either way, make sure you’re clear in advance about what you’re testing.
“Understand what exactly you want to validate, be it the color scheme, the logo, the slogan, the brand name, or a function. Focus on conscious learning, rather than on abstract observation.” — Vlad, Co-Founder at Zeroqode
When building on Bubble, gathering user insights and iterating on your app is even easier. You can use plugins such as Optimizely for A/B testing and experimentation analytics, or Mixpanel for product analytics and user behavior tracking. They can inform the iterations you make directly in your app using the Agent or visual editor, continuously improving the same app from V1 to production.
Even better: you can keep tests like A/B testing running as you build, making continuous learning seamless.
How we think of prototyping differently (you should, too)
Traditional prototypes are built to validate ideas, test with users, and secure stakeholder buy-in, then discarded for “real” development.
This approach makes sense for physical products that need mass production. But digital products work differently. They benefit from a more rapid prototyping process that evolves your prototype directly into the final product—no rebuilding required.
At Bubble, you vibe code without the code to build real apps with full functionality from the start, with no disposable prototypes.
Instead, you can build a real app with full functionality right from the start. With Bubble AI generating complete apps in minutes, you can launch faster and iterate seamlessly. Your V1 evolves into your finished product through continuous improvement.
With Bubble, you build V1 of your actual product and iterate continuously using AI for speed or the visual editor for precision.
Get started building your prototype for free
Now that you know how to build real apps that launch to production, what are you waiting for? Building your app on Bubble makes it easier than ever to get your idea prototyped and out into the world, so you can start testing it with real users.
Frequently asked questions about creating prototypes
What are the four main types of prototypes?
The four main types are feasibility prototypes (to test technical possibility), low-fidelity prototypes (quick sketches for concepts), high-fidelity prototypes (realistic mockups for user testing), and live-data prototypes (functional apps connected to a real database).
What is a good example of a digital prototype?
A great example is a working mobile banking app generated with Bubble AI in minutes. Users can actually transfer money and check balances using real workflows and a live database. You can import Figma designs too, but with Bubble, you get actual functionality from the start.
How much does it cost to create a prototype?
The cost varies dramatically. A paper prototype is free. A simple clickable prototype made with a design tool like Figma might range from free (using Figma’s Starter plan) to paid subscription fees depending on the plan and number of seats needed. A fully coded, high-fidelity prototype built by an agency can range from several thousand to tens of thousands of dollars, depending on complexity and scope. Bubble offers a free plan where you can generate a complete working app with AI, then upgrade when you’re ready to launch to production. This is far more cost-effective than paying agencies tens of thousands or spending months coding yourself.
How long does it take to build a prototype?
A low-fidelity prototype can be sketched in a few hours. A high-fidelity design can take a few days to a week. Bubble AI can generate a functional app in minutes. You can then refine and launch in days or weeks, compared to months for traditionally coded apps.
What’s the difference between a prototype and an MVP?
Traditionally, a prototype tests whether you can and should build something, while an MVP is the simplest version you release to customers. With Bubble, this distinction blurs: what you create is immediately functional and ready to test with real users—it’s both your prototype AND your MVP.
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