# How to Vibe Code Your Own Smartsheet (and Stop Paying for It) > Intelligent Work Management Platform - Site: https://smartsheet.com - Category: Productivity & Project Management - Platforms: Web app, Windows app, macOS app, iOS app, Android app - Verdict: **Serious undertaking** (38/100 vibecodeable) - Estimated effort: 6 to 8 weeks of focused part-time work ## Verdict Build a focused single-user spreadsheet project tracker with basic Gantt views and AI query tools, but keep paying for Smartsheet if you need enterprise governance, automated cross-sheet bridges, and secure multi-tenant collaboration. Replicating Smartsheet's core look—a spreadsheet grid with basic CRUD—is straightforward with modern AI tooling. However, the depth of its calculation engine (recursive formula evaluation, dependency-driven Gantt scheduling, multi-user real-time conflict handling, and an MCP server executing safe table operations) constitutes a heavy, multi-week engineering lift. A solo developer will quickly bog down in formula parsing edge cases and timeline dependency math. ### What you can't replicate - Enterprise-grade audit logs, CMEK encryption, and SAML-based SSO governance - The massive library of 100+ native business app connectors (Jira, Salesforce, DocuSign, etc.) - Proprietary enterprise add-ons like Control Center, Data Shuttle, and Brandfolder DAM - The deeply ingrained organizational switching cost of 3,000+ enterprise workflows ## What it does Enterprise-grade collaborative work management and software platform that combines spreadsheet interfaces with database functionality, workflow automation, and real-time dashboards. ### Core features - Relational spreadsheet grid UI with cell formatting and column types - Live cell formulas, cross-sheet references, and formula recalculation engine - Multiple project views: Grid, Gantt (with dependencies), Kanban board, Calendar - Visual dashboards and reporting widgets with roll-up metrics - No-code workflow automation engine for alerts and updates - AI conversational assistant and formula generators with Model Context Protocol (MCP) server support ## The business ### Pricing - Pro: $12 to $19 per Member/month - Business: $19 to $24 per Member/month - Enterprise: Custom pricing - Advanced Work Management: Custom pricing ### Funding $12.2M (pre-IPO) + subsequent growth rounds ($26M, $35M, $52M) raised. - Venture rounds (2005-2017) - IPO on NYSE: SMAR (2018) - Acquired by Blackstone and Vista Equity Partners ($8.4B all-cash, 2025) Investors: Blackstone, Vista Equity Partners, Early venture backers Founded 2005. Team size: 3,000+. ## The hard parts - Building a performant spreadsheet-to-database calculation graph that handles complex cross-sheet formula dependencies without locking the UI thread - Implementing real-time multi-user concurrent cell editing and conflict resolution using WebSockets and CRDT or operational transformation patterns - Constructing an accurate Gantt dependency timeline engine that recalculates milestone shifts recursively across linked tasks - Exposing a secure Model Context Protocol (MCP) server that safely translates natural language LLM instructions into structured sheet CRUD operations ## How to vibe code Smartsheet ### Prerequisites - Node.js (free): Runtime environment for building and executing the full-stack web application. - GitHub (free): Source code repository and CI/CD deployment pipeline integration. ### Recommended AI tools - Claude Code: Best-in-class multi-file agentic coding tool for scaffolding complex relational grid components and backend formula engines. - Cursor: Essential for precise UI tuning, managing complex React table state, and reviewing diffs visually. ### Stack - Frontend: Next.js with Tailwind CSS, shadcn/ui, and TanStack Table for high-performance grid virtualization - Backend: Next.js API routes with a dedicated formula evaluation parser and MCP server implementation - Database: Turso (edge SQLite) with Drizzle ORM for fast relational row/column data storage - Auth: better-auth for self-hosted TypeScript authentication with zero MAU fees - Payments: None (personal-use clone, billing skipped) - Other: Vercel AI SDK for LLM-powered Smart Assist and formula generation, Anthropic API for high-reasoning MCP task processing ### Hosting - Vercel (Hosting the Next.js frontend application and serverless API endpoints): $0/mo (Hobby Tier) - Turso (Managed edge SQLite database for fast sheet and row storage): $0/mo (Free tier) ### Build guide 1. **Project Scaffolding and Database Schema** — Initialize the Next.js application with TypeScript, Tailwind CSS, Drizzle ORM, and Turso, establishing tables for sheets, columns, rows, cell values, and audit histories. ``` Initialize a new Next.js project with Tailwind CSS and configure Drizzle ORM to connect to Turso (SQLite). Create a robust relational database schema with the following tables: 'sheets' (id, title, owner_id, created_at), 'columns' (id, sheet_id, name, type, position, settings), 'rows' (id, sheet_id, position, created_at), and 'cells' (id, row_id, column_id, value, formula). Ensure proper foreign key constraints, indexes on sheet_id and row_id, and set up migration scripts. Verify the connection with a test seed script. ``` 2. **Virtual Grid UI and Cell Editor** — Build a high-performance spreadsheet grid interface using TanStack Table with virtualized scrolling, inline cell editing, and dynamic column type handling (text, number, date, dropdown). ``` Build a high-performance spreadsheet grid component in Next.js using TanStack Table and Tailwind CSS that mimics Smartsheet's grid view. Support virtualized scrolling for large row counts, inline cell editing with keyboard navigation (arrow keys, enter, tab), and dynamic column types (Text, Number, Date, Select dropdown). Implement optimistic UI updates that instantly reflect cell edits in local state while persisting changes asynchronously via server actions to the Turso database. ``` 3. **Formula Evaluation and Dependency Engine** — Implement a lightweight formula parser supporting basic arithmetic, SUM, AVERAGE, IF functions, and cross-sheet cell references with dependency tracking. ``` Create a formula evaluation engine in TypeScript that parses and computes cell formulas starting with '=' (supporting basic arithmetic, SUM, AVERAGE, COUNT, and IF statements). Build a directed acyclic graph (DAG) dependency resolver to track cell-to-cell references across the sheet. When a cell value changes, recursively recompute and update dependent formula cells instantly across the grid state. ``` 4. **Multi-View Engine (Gantt, Kanban, Calendar)** — Implement alternative project views (Gantt chart with dependency lines, Kanban board, and calendar) driven by the underlying sheet data structure. ``` Add alternative project views to the sheet application: a Gantt chart view, a Kanban board view, and a Calendar view. The Gantt chart must render task timelines based on start/end date columns, display predecessor dependencies with connecting lines, and support drag-and-drop schedule adjustments that update the underlying row data. The Kanban board should allow grouping rows by select-column values (e.g., Status: Backlog, In Progress, Complete) with drag-and-drop column transitions. ``` 5. **AI Assistant and Model Context Protocol (MCP) Server** — Integrate Vercel AI SDK for conversational assistance ('Smart Assist') and expose a local Model Context Protocol (MCP) server enabling external AI tools to query and modify sheet data. ``` Implement an AI conversational assistant using the Vercel AI SDK and Anthropic API that allows users to ask questions about their sheet data, generate formulas, and auto-populate rows via natural language prompts ('Smart Columns' and 'Smart Assist'). Additionally, build a lightweight Model Context Protocol (MCP) server using the Model Context Protocol SDK that exposes secure tools for external AI clients (like Claude Desktop) to list sheets, read cell ranges, and execute safe CRUD updates on rows and columns. ``` ### Cost vs paying **Starting costs (one-time):** - Custom domain (optional): $12/year - Total: ~$12 one-time **Ongoing costs (monthly):** - Vercel Hobby Hosting: $0/mo - Turso Edge SQLite: $0/mo - Anthropic API (AI Assistant usage): ~$5/mo - Total: ~$5/mo - Paying for the SaaS instead: $19 - $24 / Member / month (Business plan) - Build time: 40-50 hours - AI tool credits: $20 (Claude Pro / Cursor) - Break-even: Immediate for personal use ## Sources - [Smartsheet Official Website & Features](https://www.smartsheet.com) - [Smartsheet Pricing & Plan Breakdown](https://www.smartsheet.com/pricing) - [Business Wire - Blackstone and Vista Equity Partners Acquisition of Smartsheet ($8.4B)](https://www.businesswire.com/news/home/20240924199901/en/Smartsheet-to-be-Acquired-by-Blackstone-and-Vista-Equity-Partners-for-8.4-Billion)