Mapster Logo

Free Tools for Founders & StartUps

A collection of free tools to help you optimize content, understand algorithms, and gather customer feedback

Product Market Fit Calculator

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

Sean Ellis methodology
Real-time calculations
Visual analytics

X / Twitter Post Analytics

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

33+ algorithm signals
TweepCred analysis
Content optimization

Customer Feedback Platform for SaaS & Startups

Don't just slap a Feedback button on every page. Place targeted in-product Surveys to get contextual feedback WHEN & WHERE it matters

Get Started Free →

• No Credit card needed • Install in minutes