Pricing
Simple pricing
Free forever for one calendar. Upgrade for unlimited.
Free
$0/ month
Everything most people need.
- One calendar
- Unlimited items and ideas
- 3 AI-generated stickers
- Habit tracking
- Labels and sharing
- Light and dark mode
- Export your data anytime
Paid
$2/ month
Billed annually at $24
For people who plan more than one slice of life.
- Up to 20 calendars — work, family, projects, fitness, anything
- Unlimited AI stickers
- AI agents & API access — let Claude, Codex or Cursor plan with you (how it works)
- Everything on the Free plan
- Cancel anytime, no hassle
- Support an indie developer ✨
Already a Really Big Calendar user from before pricing was introduced? You've been grandfathered in to the Paid plan automatically — no action needed, no charge.
