#945 · Startup Tool

Pre Seed Retention Calculator

Measure customer retention for a pre-seed startup cohort and identify whether early users are staying long enough to support product-market fit and investor confidence.

Calculator

Retention inputs
users
users
users
%
Ad space

How to use this calculator

  1. Enter the number of customers at the start of the period.
  2. Enter how many of those starting customers remained.
  3. Add new customers acquired during the same period.
  4. Enter revenue retained if you track revenue retention.

What the result means

Customer retention measures how much of the starting cohort remains. Net growth adds new customers, but weak retention can hide product problems even when total users increase.

Customer retention = Retained starting customers ÷ Starting customers. Net customer growth = (Ending retained + New customers − Starting customers) ÷ Starting customers.

Do not calculate retention by dividing ending total customers by starting customers if new users are included. That mixes retention with acquisition.

Example calculation

If 100 customers start and 82 remain, customer retention is 82%. If 40 new customers are added, net growth is 22%.

Tips for better results

  • Track cohort retention by signup month.
  • Fix activation before increasing acquisition.
  • Compare customer retention and revenue retention separately.
  • Interview churned customers to identify the first failure point.

FAQ

What is a good retention rate for a pre-seed SaaS startup?

For early SaaS, monthly retention above 85% is promising, while below 70% usually signals product or onboarding issues.

How do I calculate customer retention when new users joined?

Divide retained starting customers by starting customers. Count new users separately as growth, not retention.

Why is retention more important than user growth before seed funding?

Strong retention proves users continue to receive value. Growth without retention often creates weak LTV and poor investor confidence.

What is the difference between customer retention and revenue retention?

Customer retention tracks users or accounts kept. Revenue retention tracks how much recurring revenue from the starting cohort remains.

How does poor retention affect pre-seed valuation?

Poor retention reduces LTV, weakens product-market fit evidence, and can lower investor willingness to pay a higher valuation.

Startup decision table

MetricMeaning
Retention RateShare of starting customers retained
Net GrowthGrowth after adding new users
Revenue RetentionPercent of recurring revenue retained

Browse more calculators

Category hubs