# What is Customer Retention Rate? Definition & Technical Mechanics

> **Source:** [SPIDITS AI Startup & Venture Intelligence Glossary](https://spidits.com/startup-glossary)  
> **Category:** Metrics  
> **Canonical Citation:** [https://spidits.com/startup-glossary/crr](https://spidits.com/startup-glossary/crr)

## Definition
Customer Retention Rate (CRR) measures the percentage of active customers a startup maintains over a specific period, showing customer loyalty.

## Architectural Mechanics & Deep Dive
Customer Retention Rate (CRR) measures the percentage of active customers a startup maintains over a specific period, showing customer loyalty and product value.

## Industry Applications & Real-World Use Cases
Product value and loyalty assessment

## Frequently Asked Questions

### What is the relation between churn and retention?
Retention Rate is the opposite of Churn Rate (Retention Rate = 100% - Churn Rate).

### Why is CRR important?
Retaining customers is far cheaper than acquiring new ones, boosting profitability and LTV.

## Related Terminology
- [churn-rate](https://spidits.com/startup-glossary/churn-rate)
- [ltv](https://spidits.com/startup-glossary/ltv)
- [unit-economics](https://spidits.com/startup-glossary/unit-economics)

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*From the SPIDITS AI Knowledge Base (300+ terms indexed). Explore full technical definitions: [https://spidits.com/startup-glossary](https://spidits.com/startup-glossary)*