App Prototyping: Validate Your Business Idea Fast With Figma & Bubble

App Prototyping: Validate Your Business Idea Fast With Figma & Bubble

I can usually tell when someone’s about to spend too much money on an app by the way they say the word build. It’s got that shine to it. Like the app is already inevitable, and we’re just waiting for a developer to make it real.

Then you ask a boring question—“What happens when a user taps this?”—and the room goes quiet. Not because the idea is bad. Because most app ideas are still fog at that point. And fog is expensive when you’re paying by the hour.

This is where app prototyping earns its keep. Not the “pretty screens for a pitch deck” version. The honest version: a basic, testable app prototype that helps you find out what’s true before you commit to months of development.

If you’re trying to create an app for your business—or you’ve already got one and you’re not sure what to fix first—Figma and Bubble are a ridiculously effective combo. One helps you think. The other helps you prove it.

Prototyping isn’t a phase. It’s a filter.

Most people don’t need an app. They need a better way for customers to do one job. Book a thing. Track a thing. Buy a thing. Ask a question and get an answer without ringing you at 9:07pm on a Sunday.

App prototyping is how you figure out which job you’re actually solving. It’s a filter for wishful thinking. It turns “Wouldn’t it be cool if…” into “Will anyone use this on a Tuesday when they’re in a rush?”

I’ve watched teams argue for weeks about features that, once prototyped, nobody even noticed. And I’ve watched tiny, awkward features—an extra confirmation screen, a clearer empty state—save an entire product.

That’s the point. A prototype is a cheap argument-settler.

Start with the user’s moment of panic

If you want a prototype that actually validates a business idea, don’t start with your app’s home screen. Start with the moment your user feels stuck. The moment they’re annoyed, uncertain, or trying to get something done quickly.

For a salon app, it’s not “Welcome, Sarah!” It’s “I need an appointment this week and I don’t want to call.” For a field service business, it’s “Where’s the job address again?” For an internal tool, it’s “I’ve got five tabs open and none of them tell me what’s happening.”

Write that moment down in plain language. Then prototype the shortest path from panic to relief.

Not the full product. Not your five-year vision. Just relief.

Figma: where you make it feel real (without making it real)

Figma is brilliant because it lets you fake the thing that matters most early on: the experience. The flow. The “Oh, I get it” moment. You can build a high-fidelity prototype that looks like an app, taps like an app, and convinces people they’re using an app… without you writing a line of code.

But here’s the trap: Figma makes it very easy to spend three days nudging pixels and calling it progress. I’ve done it. I’ve also pretended I was “refining the UI” when really I was avoiding hard product decisions.

So I try to keep Figma work tied to questions. Not vibes.

Questions like:

• Do people understand what to do next? (Navigation and labels)
• Can they complete the main task without help? (Core flow)
• Where do they hesitate? (Friction and confusion)
• What do they expect to happen after this tap? (Feedback and trust)

In practice, that means I’ll prototype one main journey end-to-end. Then I’ll add just enough side paths to handle the obvious “what if” moments—wrong password, empty results, payment failed, no availability.

Those edge cases are where real products live. The happy path is marketing.

A simple Figma workflow that doesn’t turn into art school

I like to start with three screens. Literally three. The entry point, the key action, and the “done” state. If you can’t explain the app with those, you’re probably building a Swiss Army knife when you need a screwdriver.

Then I’ll duplicate those screens and iterate fast. I’ll keep components simple, use a basic type scale, and avoid the temptation to perfect the colour palette. You can make it pretty later. You can’t “pretty” your way out of a confusing flow.

And yes—use real copy. Not “Lorem ipsum”. If your app is for booking, write “Book appointment”. If it’s for invoices, write “Send invoice”. Words are part of the product.

Bubble: where you test the business, not just the buttons

Figma validates whether people understand your app. Bubble helps validate whether the app can actually work—with data, logins, payments, admin screens, and all the unglamorous plumbing that makes a business app a business app.

Bubble is a no-code platform that lets you build a functional web app (often mobile-friendly too). And it’s surprisingly capable. You can create databases, set up workflows, connect APIs, and ship something real enough that customers can use it.

It’s not magic, though. You still have to think. If anything, Bubble forces you to confront reality faster—because the moment you add data, you realise you’ve been hand-waving half the product.

Which is exactly why it’s useful.

What to prototype in Bubble (and what to ignore)

If your goal is fast validation, don’t try to build the whole app in Bubble on day one. Build the parts that answer your riskiest questions.

Usually those questions are about:

• Onboarding: Can users sign up and get to value quickly?
• The core action: Can they actually do the main thing—book, order, request, track?
• Payments (if relevant): Will someone pay for this, and does the pricing make sense?
• Admin: Can you manage it without losing your mind?

Ignore the fancy stuff early. Push notifications. Perfect animations. The “settings” page with twelve toggles nobody will touch. Those are dessert. You need dinner.

And keep your database simple. You can always normalise later. Right now you’re trying to learn, not win a database design award.

How to validate your app idea without lying to yourself

The hardest part of app prototyping isn’t Figma or Bubble. It’s staying honest. It’s very easy to show a prototype to a friend, hear “Looks great!”, and take that as validation.

“Looks great” is polite. It’s not evidence.

What you want is behaviour. Confusion. Wrong taps. Questions. The little micro-pauses where someone’s brain says, “Wait… what?” That’s gold.

Here are a few ways to get real signals without turning it into a research project that never ends.

Run scrappy usability tests

Pick five people who are genuinely close to your target users. Not your mate who “could totally see using this”. Someone who actually has the problem. If you’re building for restaurant owners, talk to restaurant owners. Revolutionary, I know.

Give them a simple task: “You need to book a slot for Thursday at 3pm.” Then shut up. Seriously. The best data comes from you being slightly uncomfortable in silence.

Ask them to think out loud. Note where they hesitate, what they assume, and what they complain about. If three out of five people stumble in the same spot, it’s not them. It’s you.

Prototype the pricing earlier than you want to

Most of us avoid pricing because it feels… confrontational. But pricing is part of the product. A prototype that never asks for money can make anything feel appealing.

In Bubble, you can integrate Stripe and set up a basic checkout. Or you can do a “fake door” test—show pricing and a “Start trial” button that leads to a waitlist. The point isn’t to trick people. It’s to see if anyone leans forward.

If nobody clicks, that’s data. Slightly painful data. Still data.

Measure one thing that matters

When people talk about validating an app idea, they sometimes reach for complicated analytics setups. You don’t need that at the start.

Pick one metric that represents value. For example:

• Bookings completed per week
• Requests submitted per user
• Invoices sent
• Time saved on a repeated task

Then ask: does the prototype move that number in the right direction? If yes, you’re onto something. If not, you’ve learned cheaply.

Figma + Bubble together: a practical rhythm

The best rhythm I’ve found is embarrassingly simple: use Figma to explore, then Bubble to commit. Figma is where you try ten versions of a flow in an afternoon. Bubble is where you pick one and make it real enough to break.

I’ll often start with a Figma prototype for the main journey, test it with a handful of users, then move into Bubble for a “version zero” build. Once Bubble is live, I’ll keep Figma open for experiments—new screens, alternate copy, small improvements—before implementing them.

This avoids the two classic mistakes: building too early (expensive) and designing forever (also expensive, just in a different way).

And if you already have an app? This still works. Prototype improvements in Figma, validate the flow, then implement in your real product—or in Bubble if you’re rebuilding or testing a new feature set.

A few things I wish someone had told me earlier

Don’t prototype for approval. Prototype for clarity. If your prototype is designed to impress stakeholders, you’ll hide the messy bits. The messy bits are the product.

Use real content and real constraints. Real prices, real time slots, real addresses, real error messages. Your users live in reality. Your prototype should visit occasionally.

Assume you’re wrong. Not in a dramatic way. Just in a practical way. “This might not work—let’s find out fast.” It’s oddly freeing.

Keep the scope small enough that you can change your mind. The whole point of app prototyping is that changing your mind is cheap. If you’ve built a monster, you’ll defend it. Even if it’s not good.

So… should you prototype your app idea?

If you’re about to spend serious money on development, yes. If you’re stuck arguing about features, yes. If your current app feels clunky and you’re not sure what to fix, yes. App prototyping is one of the few things in product work that reliably reduces regret.

Figma gives you speed and clarity. Bubble gives you reality and feedback. Together, they let you validate a business idea without betting the farm.

And if you do it right, you’ll end up with something better than a prototype. You’ll end up with a small, working slice of your app that people can actually use—something you can learn from, improve, or even quietly grow into the real thing.

Which is nice, because most of us don’t need a grand launch. We just need to stop guessing.