# How to Vibe Code Your Own TickTick (and Stop Paying for It) > A To-Do List and Calendar to keep you organized - Site: https://ticktick.com - Category: Productivity - Platforms: Web app, macOS app, Windows app, iOS app, Android app - Verdict: **Serious undertaking** (45/100 vibecodeable) - Estimated effort: 3-4 months of part-time work ## Verdict Build a web-first personal subset rather than trying to clone every native app client, but expect significant engineering overhead on calendar sync and offline state. TickTick is deceptively deep. While a solo developer can spin up a Kanban board and basic todo list over a weekend, replicating the seamless cross-platform native presence (macOS, Windows, Linux, iOS, Android), bi-directional Google Calendar sync, offline conflict resolution, and rich habit/pomodoro analytics is a massive, multi-month undertaking. If you want a personal productivity suite, paying $35.99/yr is infinitely more rational than building it; if you are building it for the challenge, scope it strictly to a web-based PWA. ### What you can't replicate - Simultaneous, polished native client wrappers for macOS, Windows, Linux, iOS, and Android with global OS shortcuts - Deep integration ecosystem with millions of established user workflows and third-party tools ## What it does An all-in-one productivity and time-management application blending task management, calendar scheduling, habit tracking, and focus tools. ### Core features - Task management with hierarchical lists, tags, filters, and Kanban boards - Natural Language Processing (NLP) date/time parsing - Multiple calendar views (yearly, monthly, weekly, daily, agenda) - Built-in Pomodoro timer with white noise and session stats - Dedicated habit tracker with streaks and statistics - Countdown timers for important dates - Real-time cross-device synchronization and data storage ## The business ### Pricing - Free: $0 - Premium Monthly: $3.99/mo - Premium Annual: $35.99/yr Founded 2013. Team size: Unknown. ## The hard parts - Cross-platform synchronization and offline-first state reconciliation - Multi-directional external calendar integration (Google Calendar sync) - Robust natural language date/time grammar parsing across locales - Snappy chart rendering and smooth Kanban drag-and-drop interactions ## How to vibe code TickTick ### Prerequisites - Node.js (free): Required runtime for building the full-stack web application. - GitHub (free): Version control and deployment pipeline integration. ### Recommended AI tools - Claude Code: Handles multi-file scaffolding, API routes, and iterative debugging loops effectively. - Cursor: Provides an AI-native editor for refining frontend components, drag-and-drop boards, and chart dashboards. ### Stack - Frontend: Next.js with Tailwind CSS and Apache ECharts for stats - Backend: Next.js Server Actions and API Routes - Database: Turso (SQLite at the edge for low-latency personal sync) - Auth: better-auth - Payments: none - Other: Vercel AI SDK, PostHog ### Hosting - Cloudflare (Hosting the Next.js web application and edge database queries): $0-5/mo ### Build guide 1. **Project Scaffolding & Database Schema** — Initialize the Next.js project with Tailwind CSS and configure Turso SQLite for relational task storage. ``` Initialize a new Next.js project using App Router and TypeScript. Install Tailwind CSS and set up a Turso SQLite database client using libSQL. Create database migration files for 'users', 'lists', 'tasks', 'habits', and 'pomodoro_sessions' tables. Ensure fields support hierarchical nesting (parent_id), recurrence rules, due dates, priority levels, and completion timestamps. Write a robust seed script to verify database connectivity and basic CRUD operations. ``` 2. **Authentication & User Management** — Implement self-hosted authentication to secure user task lists and preferences. ``` Integrate better-auth into the Next.js application supporting email and password sign-in as well as secure session management. Create protected API routes and middleware to isolate user data per authenticated account. Build clean, minimal login and registration pages styled with Tailwind CSS matching a modern dark/light productivity UI theme. ``` 3. **Task Management & NLP Parser** — Build the core task capture engine with natural language date parsing and list organization. ``` Build a task creation input component equipped with a lightweight Natural Language Processing parser that extracts due dates, times, tags, and priorities from typed strings (e.g., 'Finish quarterly report tomorrow at 3pm #work p1'). Implement sidebar navigation for switching between custom lists, tag filters, and Kanban board views. Support drag-and-drop reordering of tasks across lists and priority quadrants. ``` 4. **Calendar & Time-Management Views** — Develop multi-view calendar layouts and integrated productivity tools. ``` Create interactive calendar views (monthly, weekly, daily, and agenda) that display tasks scheduled with specific times. Build a dedicated Pomodoro timer component with configurable work/break intervals, ambient white noise audio toggles, and session logging. Implement a habit tracker view tracking daily streaks, completion grids, and basic habit statistics. ``` 5. **Analytics Dashboard & Polish** — Integrate productivity analytics charts and finalize responsive layout polish. ``` Integrate Apache ECharts to build a productivity analytics dashboard showing completed tasks over time, focus duration distribution, and habit completion streaks. Add comprehensive keyboard shortcuts (e.g., quick add shortcut modal, navigation keys) and ensure mobile web responsiveness for a seamless PWA experience. Write end-to-end tests for core task creation and filtering loops. ``` ### Cost vs paying **Starting costs (one-time):** - Custom Domain (optional): $12/yr - Total: ~$32 one-time **Ongoing costs (monthly):** - Cloudflare / Turso Hosting: $0-5/mo - Total: ~$0-5/mo - Paying for the SaaS instead: $3.00/mo ($35.99/yr) - Build time: 60-80 hours - AI tool credits: $20 (1 month of Claude Pro / Cursor) - Break-even: Never (purely for custom engineering control and learning) ## Sources - [TickTick Official Website & Features](https://ticktick.com) - [TickTick Security & Terms](https://ticktick.com/about/security)