🎮 Flexing Data Playgrounds

Learn data by doing.

Free, no-setup playgrounds you run right in your browser. Pick a tool, mess around with real data, and build the muscle memory that lessons alone can't give you.

📈

Excel Playground

Practice Excel formulas, functions, Pivot Tables, dashboards, lookup functions, and interview questions through interactive exercises and real business scenarios.

Open Excel Playground →
● Live
📊

Statistics Playground

Learn statistics visually with interactive examples covering Mean, Median, Mode, Range, Variance, Standard Deviation, Outliers, Quartiles, Skewness, and more.

Open Statistics Playground →
● Live
🗄️

Om SQL Om Playground

SQL Query likhna to abhi baaki hai mere dost.. Practice SELECT, JOIN, GROUP BY, Window Functions and more against a real database, right in your browser.

Lights. Camera. Query →
● Live
🐼

Pandas Playground

Write real pandas, step by step, on a live dataset, guided lessons, instant output, and a friendly mentor walking you through each line. Zero install.

Open Pandas Playground →
● Live
🤖

ML: Linear Regression Playground

Learn what is Linear Regression visually, an interactive page for anyone to understand

Open LR Playground →
● Live
📊

Data Analyst Job Simulator

Curious what a Data Analyst's workday actually feels like? For the next 60 minutes, you'll step into realistic workplace scenarios inspired by real industry experiences.

Can you stay organized, prioritize your work, and finish before time runs out?

Open DA Job Simulator →
● Live
📄

Resume Builder

Create ATS-friendly resumes in minutes with professionally designed templates, AI-powered content suggestions, keyword optimization, and recruiter-approved formatting.

Open Resume Builder →
Coming soon
🎤

Mock Interview Playground

Face realistic Data Analyst interviews with AI. Answer technical and HR questions, receive instant feedback, and improve your confidence before the real interview.

Shashank is building this with Claude — and you can too. Want to make it? Enter the contest below. 👇
🏆 Build & Win

Build a playground.
Win 1 month of Claude Pro.

Every playground here was built with Claude — and you can build one too. No big team, no fancy setup: just you and an AI pair-programmer.

Make your own learning playground as a single, standalone HTML file (Excel, SQL, statistics — anything data). Share it with Shashank, and if it's selected to go live on this page, you win 1 month of Claude Pro. 🎉

📧 Email my entry 💬 Send on WhatsApp
  1. 1Build it with Claude. One single standalone HTML file — all the code, styles and data in one place.
  2. 2Make it teach. Pick a data skill (Excel, SQL, stats…) and let people learn it by doing.
  3. 3Share it with Shashank. Email or WhatsApp your file — that's your entry.
  4. 4Get selected, get rewarded. If yours goes live here, you win 1 month of Claude Pro.

New playgrounds drop here as they're built. Questions? shashank@flexingdata.com