cohort-analysis

Cohort Analysis & Retention Explorer

Purpose

Analyze user engagement and retention patterns by cohort to identify trends in user behavior, feature adoption, and long-term engagement. Combine quantitative insights with qualitative research recommendations.

How It Works

Step 1: Read and Validate Your Data

Accept CSV, Excel, or JSON data files with user cohort information

Verify data structure: cohort identifier, time periods, engagement metrics

Check for missing values and data quality issues

Summarize key statistics (cohort sizes, date ranges, metrics available)

Step 2: Generate Quantitative Analysis

Calculate cohort retention rates and engagement trends

Identify retention curves, drop-off patterns, and anomalies

Compute feature adoption rates across cohorts

Calculate month-over-month or period-over-period changes

Generate Python analysis scripts using pandas and numpy if requested

Step 3: Create Visualizations

Generate retention heatmaps (cohorts vs. time periods)

Create line charts showing cohort progression

Build comparison charts for feature adoption

Visualize drop-off points and engagement trends

Output as interactive charts or static images

Step 4: Identify Insights & Patterns

Spot one or more significant patterns:

- Early churn in specific cohorts
- Late-stage engagement changes
- Feature adoption clusters
- Seasonal or temporal trends

Highlight surprising findings and deviations

Compare cohort performance to establish baselines

Step 5: Suggest Follow-Up Research

Recommend qualitative research methods:

- Targeted user interviews with churning users
- Feature usage surveys with engaged cohorts
- Session replays of key interaction patterns
- Win/loss analysis for high vs. low retention cohorts

Design follow-up quantitative studies

Suggest A/B tests or feature experiments

Usage Examples

Example 1: Upload CSV Data

Upload cohort_engagement.csv with columns: cohort_month, weeks_active,
user_id, feature_x_usage, engagement_score

Request: "Analyze retention patterns and identify why Q4 2025 cohorts
underperform compared to Q3"

Example 2: Describe Data Format

"I have monthly user cohorts from Jan-Dec 2025. Each row shows:
cohort date, user ID, purchase frequency, and support tickets.
Analyze which cohorts show best long-term retention."

Example 3: Feature Adoption Analysis

Upload feature_usage.xlsx with cohort adoption data.

Request: "Compare adoption curves for our new feature across cohorts.
Which cohorts adopted fastest? Any patterns?"

Key Capabilities

Data Reading: Import CSV, Excel, JSON, SQL query results

Retention Analysis: Calculate and visualize retention rates over time

Cohort Comparison: Compare metrics across cohort groups

Anomaly Detection: Flag unusual patterns or drop-offs

Python Scripts: Generate reusable analysis code for ongoing analysis

Visualizations: Create heatmaps, charts, and interactive dashboards

Research Design: Suggest targeted follow-up studies and interview approaches

Statistical Summary: Provide quantitative metrics and correlation analysis

Tips for Best Results

Include time dimension: Provide data across multiple time periods

Define cohort clearly: Make cohort grouping explicit (signup month, feature launch date, etc.)

Provide context: Explain product changes, launches, or events during the period

Multiple metrics: Include retention, engagement, feature usage, revenue, etc.

Sufficient data: At least 3-4 cohorts for meaningful pattern identification

Request specific output: Ask for visualizations, Python scripts, or research recommendations

Output Format

You'll receive:

Data Summary: Cohort overview and data quality assessment

Quantitative Findings: Key metrics, retention rates, and trend analysis

Visualizations: Charts showing retention curves, adoption patterns

Pattern Identification: 2-3 significant insights from the data

Research Recommendations: Specific qualitative and quantitative follow-ups

Analysis Scripts (if requested): Python code for reproducible analysis

Next Steps: Prioritized actions based on findings

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