Replacing 5 SaaS Subscriptions with One Internal Tool
A unified internal platform that replaced Airtable, Zapier, Calendly, TypeForm, and Slack workflows with a single custom tool saving $3,200/month.
Client: Confidential Professional Services Firm
Unified dashboard showing a client intake form, automated workflow pipeline, appointment calendar, and team inbox — all in one interface with a sidebar navigation.
The Challenge
The firm used Airtable for client tracking ($600/mo), Zapier for workflow automation ($200/mo), Calendly for appointment booking ($400/mo for the team), TypeForm for intake forms ($300/mo), and multiple Slack channels with custom bots ($1,700/mo for Slack Enterprise). Each tool had its own login, its own data model, and its own quirks. Automations broke regularly because Zapier couldn't handle their custom logic. Client data was scattered across 5 systems, and nobody had a complete view of any client relationship. The managing partner wanted one tool that did everything, under their control, with their exact workflows.
Our Approach
We audited exactly how each tool was used and found that 80% of functionality could be replicated with 4 core modules: forms, workflows, scheduling, and messaging. The forms module replaced TypeForm with conditional-logic intake forms that wrote directly to the client database. The workflow module replaced Airtable and Zapier with a visual pipeline builder: triggers (form submitted, appointment booked, status changed) fired actions (send email, update record, notify team). The scheduling module replaced Calendly with availability-based booking pages embedded on their website. The messaging module replaced Slack workflows with an internal inbox tied to client records. We didn't try to replace Slack itself for team chat — just the business-process bots. The entire system was built as a Next.js monolith with PostgreSQL, keeping deployment and maintenance simple.
What We Built
Delivery Timeline
Day 1-3: Audit + Architecture
Audit all 5 tools, map exact workflows, design unified data model, set up project.
Day 4-7: Forms + Database
Conditional form builder, client database, data import from Airtable and TypeForm.
Day 8-12: Workflow Engine
Visual pipeline builder, trigger/action system, BullMQ execution, email integration.
Day 13-16: Scheduling + Messaging
Availability calendar, booking pages, internal messaging tied to client records.
Day 17-19: Migration + Testing
Data migration from all 5 tools, parallel-run testing, workflow validation.
Day 20-21: Launch
Production deployment, team training, SaaS cancellation checklist.
Tech Stack
Architecture
frontend
Next.js with a modular dashboard layout and Tailwind CSS.
backend
Next.js API routes with Drizzle ORM on PostgreSQL. BullMQ for workflow execution.
auth
Better Auth with Google Workspace SSO.
data
PostgreSQL for everything. Single source of truth for all client data.
Resend for transactional emails triggered by workflows.
Security
rbac
Partner, Associate, and Assistant roles with feature-level permissions.
secrets
Railway environment variables.
audit
Full audit trail on client record changes and workflow executions.
backups
Daily automated backups with 30-day retention.
The Results
“We were paying $38K a year for tools that didn't work together. The custom platform costs us $95 a month in hosting and does everything better. The workflow automation alone was worth the entire investment.”
Key Takeaways
Most companies can replace 3 to 5 SaaS tools with one custom platform. The combined annual cost of those tools often exceeds the one-time build cost.
Visual workflow builders are the highest-ROI internal tool feature. Non-technical staff can create and modify automations without developer involvement.
Don't try to replace general-purpose tools like Slack for chat. Replace only the business-specific workflows that live inside those tools.
Deliverables
FAQ
Frequently Asked Questions
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