--- title: "Bubble vs Custom React MVP for Your Investor Demo" description: "Building an investor demo? Here's when Bubble makes sense and when a custom React MVP gives you the edge in fundraising conversations." date: 2026-03-07 tags: ["bubble vs react mvp", "bubble for investor demo", "custom react mvp investor", "bubble vs coded app startup", "mvp for fundraising"] author: "Jan Kraus" url: https://www.liberateweb.com/resources/bubble-vs-custom-react-mvp/ source: LiberateWeb --- > Planning note: costs, timelines and vendor features are editorial estimates checked at the review date. Verify current terms before purchasing. ## The Short Answer If you're pitching next week and have no product, Bubble can get you a clickable demo fast. If you're raising a seed round and have 3-4 weeks, a custom React (or Next.js) MVP will outperform Bubble in every investor conversation. The real question isn't Bubble vs React — it's "what stage am I at and what am I trying to prove?" ## Who This Is For - **Founders preparing for investor meetings** who need a working demo - **Pre-seed founders** debating whether to invest in a proper build before raising - **Founders with a Bubble prototype** wondering if they should rebuild before their seed round Not relevant if you're bootstrapping and have no plans to raise — in that case, use whatever gets you to paying customers fastest. ## The Investor's Perspective (What They Actually Think) The "investors don't care about tech" myth needs correcting. This is what actually happens: **Pre-seed (£50K-£250K):** Most angel investors and pre-seed funds really don't care if it's Bubble. They're betting on the founder and the market. A Bubble demo that shows traction (waitlists, LOIs, early revenue) beats a beautiful React app with no users. **Seed (£500K-£2M):** This is where it shifts. Seed investors are pricing in execution risk. A Bubble app signals: "We'll need to spend 3-6 months of your money rebuilding before we can grow." A custom codebase signals: "Your money goes straight to features and growth." **Series A (£2M+):** If you're still on Bubble at this stage, something has gone wrong. Technical due diligence is standard here, and there's nothing to diligence with no-code. ## The Case for Bubble: Speed to Demo Bubble's superpower is speed. A competent Bubble builder can create a working, multi-page application with user auth, database, and workflows in 3-5 days. That's hard to argue with. For early-stage founders who need to: - Show something at a pitch event next week - Test whether users even want this thing before investing in code - Create a visual prototype more convincing than Figma mockups Bubble is a legitimate tool. We've seen founders raise pre-seed rounds off Bubble demos. It works. ### But Be Honest About the Limitations Bubble demos tend to feel like Bubble demos. The page transitions are slightly off. Data-heavy pages load slowly. The mobile experience is often an afterthought. Experienced investors notice. More importantly, every pound you invest in Bubble has a shelf life. When you do rebuild (and you will), nothing transfers. ## The Case for Custom React: Credibility and Continuity A Next.js MVP deployed on Vercel, backed by Supabase, styled with Tailwind — this is indistinguishable from a product built by a well-funded startup. It loads fast. It looks sharp. It works on mobile. When an investor asks "what's the tech stack?", you answer with confidence: "Next.js, Supabase, deployed on Vercel, CI/CD pipeline in place." That answer does real work in the conversation. It says: we're serious, we're building to scale, and we know what we're doing. ### What a Demo-Ready React MVP Looks Like You don't need a complete product. You need: 1. **Authentication** — social login or email/password, takes 30 minutes with Supabase Auth 2. **The core flow** — the one thing that demonstrates your value proposition, polished end-to-end 3. **A clean dashboard** — shows data, looks professional, responsive 4. **Real deployment** — custom domain, HTTPS, fast loads That's it. Three to five screens, one compelling flow. At [LiberateWeb](/solutions/startup-founders/), this is exactly what our Founder tier (£5K, 2-4 weeks) delivers — purpose-built for this moment in a startup's life. ## Real Cost-Benefit Analysis Consider the maths for a founder raising a £500K seed round: **Bubble path:** - Build Bubble demo: £0-£500 (your time + platform fees) - Use it for fundraising: some investors discount you, let's say it costs you 10-15% more dilution or a lower valuation - Post-raise rebuild: £10K-£15K + 6-8 weeks before you can start building new features - **Total cost:** £10K-£15K + 6-8 weeks of post-funding runway burnt on rebuild + potential valuation hit **Custom React path:** - Build custom MVP: £5K-£10K pre-raise - Use it for fundraising: stronger position, better valuation conversations - Post-raise: start building new features immediately on the existing codebase - **Total cost:** £5K-£10K upfront, zero rebuild cost, faster time-to-market post-funding For most founders raising a seed round, spending £5K-£10K on a custom MVP before the raise is one of the highest-ROI investments they can make. ## The Hybrid Approach Some founders use Bubble to validate, then commission a custom build before fundraising. This is smart if you have the timeline: 1. **Weeks 1-3:** Bubble prototype, test with 50-100 users 2. **Weeks 4-7:** Custom MVP build based on validated learnings 3. **Week 8+:** Fundraise with a real product and real user data You get the speed of no-code for validation and the credibility of custom code for fundraising. Best of both worlds, if your timeline allows it. ## So Which One? If your investor meeting is in 7 days and you have nothing, build a Bubble demo. Something is better than nothing, and a working prototype is better than slides. If you have 3-4 weeks and £5K, build a custom MVP. The compounding benefits (investor credibility, scalable codebase, faster post-raise execution) far outweigh the extra time and cost. And if you've already raised on a Bubble demo? Congratulations, that's great execution. Now rebuild in code before you spend another pound on features, because every feature you add in Bubble is a feature you'll rebuild later. ## Frequently asked questions ### Can investors actually tell if my demo is built on Bubble? Yes — at least the technical ones can. Bubble apps have a distinctive feel: slightly sluggish loads, specific UI patterns, and a bubble.io subdomain (unless you pay for a custom domain). Investor CTOs or technical due diligence teams will spot it immediately. Whether they care depends on the stage — at pre-seed, most won't mind. ### What should an investor demo MVP actually include? At minimum: user authentication, one core workflow that demonstrates your value proposition, a clean dashboard or home screen, and mobile responsiveness. You don't need admin panels, settings pages, or edge case handling. Focus on the 'aha moment' — the one flow that makes investors say 'I get it.' ### How much does a custom React MVP cost for an investor demo? A focused investor demo MVP typically costs £5K-£10K with a specialist agency. At LiberateWeb, our Founder tier (£5K) covers exactly this — auth, one core feature, clean design, deployed to a real domain. Larger agencies might charge £15K-£25K for the same scope. ### Should I build the full product or just a demo? Build a demo. Specifically, build the minimum flows an investor needs to see to understand your product. A focused demo with 3 polished screens beats a sprawling app with 15 half-finished features. You can always add more post-funding. ### What if I already have a Bubble prototype — should I rebuild before fundraising? If you're raising pre-seed (under £250K), probably not — investors at that stage care more about traction and the team. If you're raising a seed round (£500K+), rebuilding in code before the raise strengthens your position and means investor money goes to growth, not a rewrite. ## Sources - [Bubble — Plans and pricing](https://bubble.io/pricing) - [React documentation](https://react.dev/) - [Supabase — Plans and pricing](https://supabase.com/pricing) ## Editorial review Reviewed by [Jan Kraus](/authors/jan-kraus/). Prices, timelines and recommendations are planning guidance; verify current vendor terms before making a purchase decision. [Read the LiberateWeb editorial policy](/editorial-policy/).