Cost Breakdown
How much to build
a Cron (Notion Calendar) clone?
Realistic cost and timeline breakdown for building a calendar app like Cron (Notion Calendar) — as a solo dev with AI tools.
The real numbers
Solo Dev (No AI)
$1,000–$4,000
5–8 weeks
⚡ Recommended
Solo Dev + AI Tools
$400–$1,500
2–4 weeks
Hire an Agency
$10,000–$25,000
8–16 weeks
What you're building
CalendarintermediateMRR: Acquired by Notion
Clean, fast calendar app with scheduling links, multiple calendar support, and keyboard shortcuts.
Core Features to Clone
- Multi-calendar view
- Scheduling links
- Keyboard shortcuts
- Time zone overlay
- Meeting prep notes
- Availability sharing
Recommended tech stack
Next.js
Google Calendar API
PostgreSQL
Why build a Cron (Notion Calendar) alternative?
User Pain Points
- —Google Calendar UI is dated
- —Fantastical is Apple-only
- —No good web-first calendar app
Market Gaps to Exploit
- →Calendar with built-in task management
- →AI meeting prep and follow-ups
- →Calendar for freelancers with time tracking
Competitors in this space
Google Calendar
Fantastical
Amie
$$$
Skip the guesswork.
SassCloner generates a complete PRD for your Cron (Notion Calendar) clone — features, architecture, database schema, and a task board. Ready for Cursor or Claude Code.