I'll be honest: six months ago, I was that founder staring at my credit card statement wondering how I was spending over $4,000 a month on software tools for a team of five.
HubSpot, Monday.com, Calendly, Typeform, Tableau, Notion, FreshBooks, ActiveCampaign — the list went on. Each one solved a specific problem. None of them talked to each other. And all of them were bleeding us dry.
Then something shifted. The AI dev tools got good enough that I started asking a different question: what if I didn't have to buy these solutions? What if I could build them?
Over the next four months, my team and I replaced eight SaaS tools with custom-built alternatives. We kept two because they genuinely weren't worth our time to replace. Here's what we learned.
CRM: Ditching HubSpot for a Custom Contacts Database
What we replaced: HubSpot ($120/month for the tier we needed)
The problem: HubSpot is powerful, but we were using maybe 20% of it. We needed contact management, basic deal tracking, and activity logs. Everything else was overhead and confusion.
The solution: A React-based CRM built in Claude Code with a PostgreSQL backend. Contact cards, a kanban-style deal pipeline, and automatic logging of customer interactions. Took four Cursor sessions over two weeks to build and deploy.
The build: 40 hours of actual development time, though I only spent about 8 hours directly in Cursor. The AI handled the heavy lifting.
Monthly savings: $120 (and no more feature bloat)
The custom version does exactly what we need, syncs with our email, and we own the data. Worth every hour.
Project Tracker: Replacing Monday.com with Something That Actually Fits
What we replaced: Monday.com ($168/month)
The problem: Monday is slick, but it's designed for a different kind of team. We needed simple project timelines, dependency tracking, and integration with our communication tools.
The solution: A lightweight project dashboard in Next.js. Drag-and-drop task management, timeline views, and Slack integration. The AI built the whole thing in one intensive weekend.
The build: About 30 hours of work, almost entirely by Claude Code with minimal prompting.
Monthly savings: $168
This one surprised me. I thought building a project tracker would be complex. Turns out, if you strip away the 200 features nobody uses, it's straightforward.
Scheduling: Calendly Replacement with Direct Integration
What we replaced: Calendly ($168/month)
The solution: A scheduling system built directly into our custom CRM. Availability sync with Google Calendar, automatic reminder emails, and integration with our contact records.
The build: 20 hours. Cursor handled the calendar API integrations without a sweat.
Monthly savings: $168
Forms: Building Beyond Typeform's Limitations
What we replaced: Typeform ($99/month)
The solution: A custom form builder integrated into our dashboard. Create forms with logic, capture responses directly to our database, and trigger workflows automatically.
The build: 25 hours over one week.
Monthly savings: $99
Bonus: forms now trigger email sequences and CRM updates automatically. Typeform couldn't do that without three other integrations.
Reporting Dashboard: Replacing Tableau
What we replaced: Tableau ($240/month)
The solution: A custom reporting dashboard pulling from our database. Real-time metrics, charts that actually matter to the business, and the ability to add new views in minutes instead of weeks.
The build: 35 hours.
Monthly savings: $240
This one made me angry looking back. We were paying $240 a month to see five metrics we could display in two days of custom development.
The Tools We Kept (and Why)
I want to be honest: not everything should be replaced.
Slack ($500/month): Building a team communication tool is not worth our time. Slack is good enough and the switching cost is enormous.
QuickBooks ($50/month): Accounting is a regulatory minefield. We kept QuickBooks for tax compliance and audit trails.
The Real Numbers
- Previous SaaS spend: $4,054/month
- After replacements: $550/month (just Slack and QuickBooks)
- Monthly savings: $3,504
- Total build hours: 222 hours across the team
- Total investment: ~$8,000-10,000 in development time
- Payback period: 2.4 months
And then the savings keep coming. Every month, we're not spending $3,504 on tools.
What This Actually Taught Me
Building your own tools isn't about being a hero or rejecting SaaS. It's about matching the tool to the problem.
The magic happened because we were willing to build tools that were 80% as powerful as the enterprise versions, but 100% aligned with how we actually work. We don't need 200 features. We need eight features that work perfectly together.
The bigger realization: the economics completely changed once the AI tools got good. What took six weeks two years ago takes six hours now. That changes the calculation from "never" to "always consider it."