Free Tools for Founders & Product Managers

Free tools to measure product market fit, collect customer feedback, and validate your startup idea before you build.

Product Market Fit Calculator

Calculate your Product Market Fit score using Sean Ellis' proven methodology

Sean Ellis methodology
Real-time calculations
Visual analytics

NPS Calculator

Calculate your Net Promoter Score instantly from your survey responses

Promoter / passive / detractor breakdown
Industry benchmark guide
NPS score interpretation

CSAT Calculator

Calculate your Customer Satisfaction Score from your survey ratings

1–5 rating breakdown
CSAT benchmark guide
Satisfaction score interpretation

CES Calculator

Calculate your Customer Effort Score to find where customers hit friction

1–7 effort scale
CES benchmark guide
Effort distribution breakdown

Sample Size Calculator

Find out how many survey responses you need for statistically significant results

Confidence level selector
Margin of error control
Finite population correction

X / Twitter Post Analytics

Upload your X analytics CSV and get insights based on actual algorithm weights

33+ algorithm signals
TweepCred analysis
Content optimization

Product Market Fit Assessment

Find out if you have PMF based on your retention, growth, and dependency signals - before running a formal survey

12 questions across 3 dimensions
Score + tier breakdown
Actionable next steps

Founder Product Fit Calculator

Assess how well you and your team are matched to the product you're building

Industry expertise scoring
Network & distribution assessment
Actionable fit score

Churn Rate Calculator

Calculate your monthly and annual churn rate and understand the revenue impact

Monthly & annual churn
SaaS benchmark guide
MRR & LTV impact estimate

Retention Rate Calculator

Calculate your monthly and annual retention rate and understand the impact on your business

Monthly & annual retention
SaaS benchmark guide
MRR & LTV impact estimate

MRR Calculator

Calculate your Monthly Recurring Revenue and ARR across all pricing plans

Multi-plan MRR breakdown
ARR conversion
MRR milestone guide

Customer Lifetime Value Calculator

Calculate LTV using the SaaS method or general method, plus your LTV:CAC ratio

SaaS & general methods
LTV:CAC ratio
Gross margin adjustment

Rule of 40 Calculator

Check if your SaaS passes the Rule of 40 benchmark used by investors

Growth rate + profit margin
Score benchmarks
Notable SaaS comparisons

Survey Response Rate Calculator

Calculate your survey response rate and benchmark it against email and in-product averages

Response rate formula
Channel benchmarks
Tips to improve response rate
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Customer Feedback Surveys with Context for SaaS and Startups

Targeted surveys that link every response to a real user and location.

Get Started Free

No credit card required