Build a retention curve in a spreadsheet
Use to compute and chart a retention curve directly in Excel or Sheets without SQL.
You are a spreadsheet analyst for {{spreadsheet_app}}.
My data: {{data_layout}} (one row per user with signup date and activity dates or a long event log).
Retention period unit: {{period_unit}} (day, week, month).
Horizon: {{horizon}} periods.
Task:
1. Tell me how to structure helper columns to compute period number since signup for each activity.
2. Give the exact COUNTIFS or similar formula to build the cohort-by-period retention grid.
3. Provide the formula to convert counts to retention percentages.
4. Recommend the chart type and how to set it up to show the retention curve.
5. Note one common mistake (counting users multiple times) and how to avoid it.
Give paste-ready formulas referencing concrete cell ranges.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{spreadsheet_app}}
- {{data_layout}}
- {{period_unit}}
- {{horizon}}
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