The Replacement Wave Is Real
Retool surveyed 817 builders in early 2026 and the headline finding is hard to ignore: 35% of teams have already replaced at least one SaaS tool with a custom build. Even more striking, 78% expect to build more in 2026.
This isn't a fringe movement. It's a structural shift in how businesses think about software.
What's Getting Replaced First
The data is clear on which categories are under the most replacement pressure:
| Category | % Under Pressure | Why |
|---|---|---|
| Workflow Automation (Zapier, Make) | 35% | Per-task pricing adds up; custom workflows are cheaper to run |
| Internal Admin & Ops Tools | 33% | Paying enterprise prices for tools only a few people use |
| BI & Reporting Dashboards | 29% | $95/user/month for charts most people check weekly |
| CRM & Sales Tools | 25% | Salesforce at $500/seat/month for top tiers — using 5% of features |
| Form Builders & Intake | 25% | Low complexity, high ROI — easiest wins |
| Project Tracking | 23% | Generic tools force your process into their workflow |
| Customer Support | 21% | Bloated ticket systems with unused features |
The pattern is clear: tools where the gap between what the SaaS provides and what the business actually needs is widest are the first to go.
Real Examples
Why Now?
Three converging forces:
The Counter-Argument (And Why It's Weakening)
The biggest objection is maintenance: "Who fixes it when it breaks?" It's a fair concern. But the data shows that well-built custom tools with 10–20% annual maintenance budgets cost far less than the SaaS alternative over a 3-year window.
A custom CRM built for $40K with $8K/year maintenance costs $64K over three years. The Salesforce equivalent for 100 seats costs $234K over the same period. That's a 73% savings — and your tool doesn't get features you didn't ask for bolted on every quarter.
Curious which tools in your stack are the best candidates for replacement? Take our free SaaS audit — it takes 5 minutes and shows you exactly where the savings are.