Growth analyst

Cohort retention read

Immediate result: A plain-English read of your cohort table: where users drop, which cohorts improved and what to test.

Problem it solvesA retention table full of percentages doesn't tell you what's improving or why.

Download SKILL.md
Add this skill to
ChatGPTClaudeGeminiPerplexity

You paste

Monthly cohorts Jan–Jun 2026, months 0–5

You get

Biggest drop: month 0 → 1 (100% → 38%).

Improving: May and June cohorts keep 46% at month 1 vs 34% for Jan.

Flattens at ~22% from month 3 — a real core, worth growing.

About this skill

About Cohort retention read

A retention table full of percentages rarely tells you what's improving or why. This skill reads your cohort table and explains it: where the biggest drop happens, whether recent cohorts retain better than older ones at the same age, and whether the curve flattens — a sign that a core group of users has found lasting value. It only compares cohorts at the same age and turns the biggest drop into testable hypotheses and experiments. Growth teams use it to decide where retention work will pay off first. To use it, paste the skill into your assistant and send a cohort retention table (sign-up cohort by week or month, % retained per period).

Cohort retention read AI skill for Growth analyst: you paste "Monthly cohorts Jan–Jun 2026, months 0–5" and get "Biggest drop: month 0 → 1 (100% → 38%)."
Cohort retention read — example input and the first lines it returns. Works in ChatGPT, Claude and Gemini.
Job profile
Data & analytics · Growth analyst
Works in
ChatGPT, Claude, Gemini, Copilot, Claude Code
Format
Agent Skills (SKILL.md)
Price
Free, no sign-up
Install instructions

Copy, paste, send

  1. Cold email writerCopy skillCopied ✓1 Copy the skillPress Copy skill.
  2. ANY AI ASSISTANTSKILLPaste here, then press Enter2 Paste it into a new chatChatGPT, Claude, Gemini or Copilot.
  3. ANY AI ASSISTANT3 Send your inputSend a cohort retention table (sign-up cohort by week or month.
The skill — paste this into your AI assistant
# Skill: Cohort retention read

You are running the "Cohort retention read" skill for me. I work as: Growth analyst. What I need from you: a plain-English read of my cohort table: where users drop, which cohorts improved and what to test.

## When I send you a cohort retention table (sign-up cohort by week or month, % retained per period)
1. Find the biggest drop between periods.
2. Compare recent cohorts to older ones at the same age.
3. Check whether the curve flattens (a sign of product–market fit) and where.
4. Suggest hypotheses and experiments for the biggest drop.

## Reply in this format
- Headline finding
- Biggest drop
- Cohort trend
- Does it flatten?
- Hypotheses and tests

## Rules
- Don't compare cohorts at different ages.
- Use only the facts I give you; mark anything you had to assume with [ASSUMPTION].
- If something essential is missing, ask me one short question, then continue.
- No preamble or filler: start with the result.

Confirm you're ready in one line, then wait for me to send a cohort retention table (sign-up cohort by week or month, % retained per period).

Then sendA cohort retention table (sign-up cohort by week or month, % retained per period). For example: Monthly cohorts Jan–Jun 2026, months 0–5

ChatGPT

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: open a Project, choose Instructions (or Settings → Personalization → Custom instructions for every chat) and paste it there.
  3. To share it with a team: create a custom GPT and paste the skill into its Instructions.
  4. In the Codex app: copy the skill's folder into ~/.codex/skills/ (or Customize → Skills → Add → Create skill).

Claude

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: create a Project, open Project instructions and paste the skill.
  3. As a Claude Skill: download the skill's ZIP, then in Claude open Settings → Skills → Add → Upload skill and choose the file.

Gemini

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: open Gems → New Gem, paste the skill into Instructions and save.

Microsoft Copilot

  1. Fastest: paste the skill as your first message, then send your input.
  2. In Microsoft 365 Copilot, save it as a prompt or paste it into an agent's instructions to reuse it.

Any other assistant

  1. Paste the skill as the system prompt or first message in any chat assistant (Perplexity, Meta AI, DeepSeek, Mistral, local models).
  2. Coding agents that read the Agent Skills format (SKILL.md) can load the downloaded file from their skills folder.

Install it permanently

Upload it to Claude, add it to ChatGPT's Codex app, clone it into Claude Code, or download the SKILL.md for any agent. Full guide with screenshots →

Download the ZIP and upload it in Claude. Claude then uses the skill on its own whenever a request matches.

Download ZIP

Quick setup

  1. In Claude, open Settings → Skills (under Customize).
  2. Click Add → Upload skill.
  3. Choose the ZIP — don't unzip it — and make sure the skill is switched on.
Claude Settings with Skills selected under Customize, and the Add menu open showing Upload skill, Create a skill, Create with Claude and Record your screen

Repositoryscienceofapps.com/skills/ai-skills.git · all 200 skills, one folder each, plain git over HTTPS

What it does

The steps it follows

  1. Find the biggest drop between periods.
  2. Compare recent cohorts to older ones at the same age.
  3. Check whether the curve flattens (a sign of product–market fit) and where.
  4. Suggest hypotheses and experiments for the biggest drop.
What you get back

The reply format

  • Headline finding
  • Biggest drop
  • Cohort trend
  • Does it flatten?
  • Hypotheses and tests

Rules it never breaks

  • Don't compare cohorts at different ages.
  • Uses only the facts you give it and marks assumptions.
FAQs

Questions about Cohort retention read

What does the Cohort retention read skill do?

A retention table full of percentages doesn't tell you what's improving or why. The skill fixes that: a plain-English read of your cohort table: where users drop, which cohorts improved and what to test.

How do I install Cohort retention read in ChatGPT, Claude or Gemini?

Copy the skill and paste it as the first message of a new chat, then send your input. To keep it, paste it into a ChatGPT Project or custom GPT, a Claude Project or a Gemini Gem, or upload the SKILL.md file as a Claude Skill.

What do I send Cohort retention read after installing it?

Send a cohort retention table (sign-up cohort by week or month, % retained per period). If something essential is missing, the skill asks you one short question and then continues.

Is the Cohort retention read skill free?

Yes. It's free to copy, use and adapt, with no sign-up, and works in the free versions of ChatGPT, Claude, Gemini and Copilot.

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