# Cohort Retention Chart

> An SVG retention-triangle chart that shows signup cohorts against periods, coloring each cell by percent retained with a row/column crosshair on hover and a period-average summary row.

- Author: [Arihant jain](https://21st.dev/@arihantcodes_1f7b8c4d)
- Library: [Spectrum UI](https://21st.dev/@arihantcodes_1f7b8c4d/library/spectrum-ui)
- License: no-license
- Tags: Chart, Data Visualization, Analytics
- Live preview: https://21st.dev/@arihantcodes_1f7b8c4d/components/cohort-chart

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/arihantcodes_1f7b8c4d/cohort-chart?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/chart.md