Transform Fragile Excel Spreadsheets. Into a Secure, Multi-User Web App in 10 Days.
Is your company running on a complex, 20-tab Excel file with broken formulas and version conflicts? We engineer your spreadsheet logic into a secure, customized web application with user logins, role permissions, automated backups, and live dashboards.
- Live Within 10 to 14 Business Days
- 100% Formula & Calculation Accuracy
- Multi-User Role Permissions & Audit Log
- 100% Full Code & Database Ownership
- 10–14 Days
- Turnkey Delivery
- 0 Errors
- Formula Integrity
- 100%
- Your Code & DB
- 0 Rent
- Zero Per-User SaaS Fees
Fragile spreadsheets limit operational throughput.
The Hidden Risks of Running Your Business on Excel
Spreadsheets are great for scratchpads, but dangerous for core company operations.
Version Conflicts & Overwrites
Team members editing different files leading to lost customer data and sync conflicts.
Broken Formulas & Silent Errors
One accidental formula overwrite can silently distort financial quotes and pricing calculations.
Zero User Access Control
Anyone with file access can view sensitive margins, salaries, customer lists, and financial records.
Terrible Mobile Experience
Spreadsheets are nearly impossible to navigate and update cleanly on iPhones and tablets.
No Automated Backups or Audits
No way to trace who changed what cell, when, or why if a calculation breaks.
No External API Integrations
Cannot automatically push orders to Exact Online, send WhatsApp updates, or trigger emails.
From fragile files to hardened multi-user software.
Excel Spreadsheets vs. Custom Aergent Web Application
Upgrade from fragile grid cells to an enterprise-grade internal operations tool.
Turnkey sprints with zero recurring per-user rent.
Transparent Migration Packages
Select the scale of your spreadsheet migration. Fixed price quotes before kickoff.
Single-Workflow App
Ideal for custom pricing calculators, project quotation tools, or inventory tracking spreadsheets.
Full Operations Hub
Comprehensive web app replacing mission-critical operations spreadsheets across your entire company.
Two-week structured sprint from audit to live ownership.
Our 14-Day Migration Roadmap
A structured, precision sprint ensuring 100% calculation accuracy and zero disruption.
Data Model & Formula Extraction
We dissect your Excel formulas, sanitize historical data, and design the relational PostgreSQL database schema.
Custom Web Application Build
Our Amsterdam engineers build the modern UI, code the calculation engine, and implement secure role permissions.
Data Migration & Verification Audit
We import your historical spreadsheet data and run 100+ mathematical test cases to guarantee zero calculation discrepancies.
Team Handover & Go-Live
Your new web app goes live with recorded video walkthroughs and full source code / database ownership transferred to you.
Engineered for security, speed, and outright ownership.
Why Our Web Apps Accelerate Your Business
Engineered for speed, data security, and long-term business scalability.
Rock-Solid PostgreSQL DB
Your data is stored in an ACID-compliant relational database with automatic daily snapshots.
Granular Role Permissions
Ensure staff only see the data they need to perform their work, keeping margins and finances private.
Work From Any Device
Review numbers, create quotes, and update project statuses on the road via mobile or tablet.
Audit Trail & Activity Log
Know exactly who modified a record, created a customer, or approved a quote with full timestamps.
1-Click PDF & Excel Exports
Generate beautifully branded customer proposals or export raw tables to CSV in 1 second.
100% Code Ownership
You own the complete codebase and database. No monthly subscription rent per employee.
Frequently Asked Questions
Ready to upgrade your Excel sheets to a modern web app?
Eliminate formula errors and version chaos in 14 days. Claim your migration blueprint now.