Why custom software is now cheaper than SaaS

You adapt your process to the tool, instead of the other way around.

You don't have to anymore.

The old logic

The reasoning was always the same:

"Custom software is too expensive. Just take an off-the-shelf tool and adapt your process."

And that was right. Building custom software easily cost €50,000+. So adapting to a SaaS tool was the logical call.

That comparison doesn't hold anymore.

What changed?

AI tools have fundamentally changed how software gets built. The last 2-3 years hit a tipping point.

A concrete example: last summer we built a fitness app. Stripe payments, personalized workouts, user accounts. That took 1-2 months.

With the tools we have now? That same app would take 1-2 weeks.

But not every piece of software changes

This is where people trip up.

They hear "build custom" and think they need to build their own payment system. Or their own email server.

No.

There are three kinds of software:

1. Infrastructure (always buy)

Stripe for payments. AWS for servers. Auth0 for login.

You never build this yourself. And you pay relatively little for it, a few percent of your total software costs.

2. Standard tools (don't reinvent)

Email. Calendar. Chat. Accounting.

Gmail works. Slack works. Your accounting software works. Building this yourself is a waste of time.

3. Process-specific software (this is where it gets interesting)

Your invoicing flow. Your quote generator. Your client onboarding. Your order processing. The tools that are specific to how your business works.

This is where most SMBs spend the most money. And this is exactly where custom now gets interesting.

Not because it's cheaper. But because it works better.

A tool that fits your process 100%. No workarounds. No "this software can't do that." No bending to how the tool thinks you should work.

An example: Magic of Me

Magic of Me is a personalized children's book platform. AI writes the story, generates the illustrations, creates the PDF, sends it to the printer.

They were paying for:

• BannerBear: €150/month (text on images)
• CloudConvert: €30/month (file conversions)
• Airtable: €45/month (data storage)
• Cloudinary: €50/month (images)
• A handful of smaller tools on top of that

All good tools. None of them a 100% fit.

The result after building a custom system? Half the licenses cancelled. But more importantly: the whole process runs smoother now. No more shuffling data between six different tools.

And because it's custom, there's AI inside that understands exactly how their process works. Off-the-shelf SaaS can't do that.

When does custom make sense?

Not for everything. But if you recognize any of this:

• You're paying for a tool that "almost" does what you need
• You've built workarounds because the tool isn't flexible enough
• You copy data manually between systems
• Your process is shaped around the tool, not the other way around

If you're paying more than €300-500/month for tools that only cover 80%, it's worth checking whether custom could be better and cheaper.

The bottom line

The build vs buy calculation isn't what it used to be.

You still buy Stripe. You still buy Gmail. You still buy Slack.

But that middle layer (the tools that mirror how your business actually works) has flipped.

Build it. Tailored. Fast.