· 5 min read
Custom Software vs SaaS: When Should You Build Your Own?
A decision framework for founders and CTOs choosing between off-the-shelf SaaS tools and custom-built software. Real costs, trade-offs, and when each option wins.
· 9 min read · mvp · startups · software development
How to build an MVP that actually validates your idea — covering common mistakes, tech stack choices, realistic timelines, cost ranges, and when to hire a developer vs. build it yourself.
Ten Peaks Tech
The concept of a Minimum Viable Product has been mangled by startup culture. What Eric Ries described as the fastest way to learn whether a business idea works has been reinterpreted as “build a cheap version of the full product.” Those are very different things.
We’ve helped founders build MVPs across SaaS, e-commerce, and marketplace models. The ones that succeed share a common trait: they’re built to answer a specific question, not to impress investors with feature counts. This guide covers how to think about MVP development if you’re serious about validating an idea and not just burning runway.
An MVP is the smallest thing you can build that lets real users interact with your core value proposition so you can measure whether it works.
An MVP is:
An MVP is not:
The purpose of an MVP is learning. Every feature, every screen, every interaction should trace back to a question you’re trying to answer about your market.
This is the classic. A founder has a vision for a platform with 15 features and decides to build 8 of them for the MVP instead of 15. That’s still too many.
Pick one feature. The one that represents your core value proposition. If your idea is a marketplace that connects freelance chefs with people who want home-cooked meals, your MVP doesn’t need a rating system, a chat feature, a payment system, and a scheduling calendar. It needs a way for someone to find a chef and book a meal. You can handle payments manually. You can collect feedback over email. You can schedule via text message.
“We’re building it in React Native with a Node.js backend and PostgreSQL” is something we hear in first conversations before the founder has described what the product does. Technology choices should follow product decisions, not precede them.
The right tech stack depends on what you’re building, who’s building it, and what your constraints are. We’ll cover specific recommendations below, but the principle is: choose the most boring technology that solves your problem.
Your MVP will not have a million users. It will have 10, then 50, then maybe 200. Building infrastructure to handle scale you haven’t earned is the most expensive form of procrastination.
Use a simple database. Deploy to a managed platform. Skip the microservices. You can re-architect later when you have revenue and users — that’s a good problem to have.
If you’re not measuring user behavior from day one, you’re not building an MVP — you’re building a demo. Before writing any code, define:
The right stack minimizes development time and maximizes your ability to iterate quickly. Here’s what we recommend in most cases:
For most MVPs: Next.js or Astro (depending on interactivity needs) with a hosted database like Supabase or PlanetScale, deployed to Vercel or Netlify.
This gives you server-side rendering for SEO, React components for interactive features, a managed database with a generous free tier, and deployment that’s effectively free at MVP scale. You can read more about why we use Astro for content-focused projects.
For simple CRUD apps: Consider a full-stack framework like Rails, Django, or Laravel. These frameworks are “boring” in the best way — they have solved authentication, database migrations, admin panels, and form handling thousands of times. If your MVP is essentially a database with a web interface, a monolithic framework will get you there faster than a JavaScript stack.
If you need a mobile app for your MVP, ask yourself: do you really? A responsive web app works on every phone without app store approval, distribution, or separate codebases.
If you genuinely need native features (push notifications, camera access, offline mode), use React Native or Flutter. Both let you ship to iOS and Android from a single codebase. React Native is our preference because most teams already know JavaScript.
Do not build separate native iOS and Android apps for an MVP. The development cost is 2x and the learning speed is halved because you’re maintaining two codebases.
For some MVPs, writing code is overkill. If your product is a workflow, a marketplace with simple listing/booking mechanics, or a content platform, tools like Bubble, Webflow, or even Airtable with Zapier integrations can get you to a testable product in days instead of weeks.
The tradeoff: you’ll hit a ceiling eventually. No-code tools become painful when you need custom logic, complex data relationships, or specific performance characteristics. But if the ceiling is beyond what you need for validation, that tradeoff is worth it.
Here’s what MVP development actually takes, assuming a competent developer or small team working full-time:
| MVP Type | Scope | Timeline |
|---|---|---|
| Landing page with waitlist | Static site, email capture, basic analytics | 1-2 weeks |
| Simple web app | Auth, 3-5 core screens, one database model, basic CRUD | 4-6 weeks |
| Complex web app | Auth, 8-12 screens, multiple data models, third-party integrations | 8-12 weeks |
| Mobile app (cross-platform) | Auth, 5-8 screens, API backend, push notifications | 10-14 weeks |
| Marketplace / platform | Two-sided user model, search, payments, messaging | 12-16 weeks |
These timelines assume requirements are defined before development starts. If you’re figuring out what to build while building it, add 50-100%.
MVP costs vary enormously based on who builds it, where they’re located, and how well-defined the scope is. Here are realistic ranges for US-based development:
Offshore development can reduce these numbers by 40-60%, but introduces coordination overhead, time zone challenges, and quality variance. We’ve written about the tradeoffs of different engagement models in detail.
If these numbers are beyond your budget, that’s a signal to reduce scope — not to find a cheaper developer. A $5,000 app built by the cheapest developer you can find almost always costs more than $5,000 when you factor in rewrites, bug fixes, and lost time.
At Ten Peaks Tech, we work with founders at every stage. Some hire us to build their MVP end-to-end. Others bring us in as a fractional CTO to guide architecture decisions while their team handles implementation. The right model depends on your situation — reach out and we’ll help you figure out the best path.
Shipping the MVP is not the finish line — it’s the starting gun. Here’s what should happen next:
If you’re a founder with a product idea and you’re trying to figure out the fastest, most cost-effective way to validate it, we’d like to help. We work with startups and small businesses to go from idea to shipped product with a focus on speed and learning.
Visit our services page to see how we work, or book a consultation to talk through your specific idea. We’ll give you an honest assessment of scope, timeline, and the right approach — even if that approach doesn’t involve hiring us.
Keep reading
· 5 min read
A decision framework for founders and CTOs choosing between off-the-shelf SaaS tools and custom-built software. Real costs, trade-offs, and when each option wins.
· 5 min read
Honest pricing breakdown for custom software projects: what drives costs, typical ranges for MVPs, web apps, and Shopify builds, and how to avoid getting overcharged.
· 12 min read
A prioritised security checklist for early-stage SaaS teams: auth, access control, secrets, dependencies, headers, logging, backups and pen testing.
A senior engineer replies within one business day.