# Retention Analysis

> Plan or interpret retention analyses for products, subscriptions, customers, accounts, or users. Use when Codex is asked to define retention, churn, repeat usage, renewal, engagement, survival curves, or retention improvement analysis.

- Skill: `jeremylongworth-source/retention-analysis` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add jeremylongworth-source/retention-analysis`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jeremylongworth-source/retention-analysis/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: jeremylongworth-source (https://skillmd.com/u/jeremylongworth-source)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/jeremylongworth-source/retention-analysis

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# Retention Analysis

## Core Workflow

1. Identify retained entity, retention event, start event, time window, cadence,
   and business question.
2. Define retention type: classic, rolling, return, renewal, revenue, logo, or
   engagement retention.
3. Specify inclusion/exclusion, churn, reactivation, censoring, and segment
   rules.
4. Check data quality, instrumentation, billing/source alignment, and sample
   size.
5. Interpret retention movement with caveats and confidence.
6. Recommend follow-up cohorts, experiments, customer research, or product
   changes.

## Safety Rules

- Do not invent churn, retention, revenue, or renewal figures.
- Do not treat retention changes as causal without evidence.
- Escalate retention outputs used for investor, finance, compensation, or
  public reporting.

## Deliverable Shape

For retention analyses, provide:

- Retention definition
- Entity, start event, and retained event
- Window and cadence
- Segment rules
- Analysis plan or findings
- Caveats and confidence
- Decision implications
- Follow-up checks

## References

- Read `references/retention-analysis-checklist.md` when planning or reviewing
  retention analysis.