Data Anonymizer
Strip names, emails, phone numbers and card numbers out of a spreadsheet before you share it.
AI Privacy Paste Checker
Check a message before you send it to ChatGPT or Claude, and see what you should not be sharing.
Secret Scrubber
Paste a log or an .env fragment and get it back with the keys, tokens and personal data removed.
Prompt Injection Linter
See the hidden instructions and invisible characters buried in text before you hand it to an AI agent.
Is This Chart Lying to You?
Enter a chart's axis and the two values it plotted, and see how much bigger the gap looks than it is.
Mean, Median, or Being Fooled?
Paste a column of numbers and find out whether the average is telling you the truth.
Colorblind Palette Checker
Paste your dashboard colors and see which pairs disappear for someone who is colorblind.
Why Won't My VLOOKUP Match?
Paste two spreadsheet columns and see exactly why each row fails, then copy the formula it writes for you.
SQL JOIN Visualizer
See what INNER, LEFT, RIGHT and FULL JOIN actually do, on real rows instead of a Venn diagram.
Your First Week as a Data Analyst
Play the new analyst and answer a manager's business questions in SQL, against a database that is genuinely messy.
Reconciliation Diagnostic
Your dashboard says one number and finance says another. Answer four questions and it ranks the likely reasons.
Ask Your Books
Ask a fictional studio's bookkeeping a plain English question and watch the SQL run against a real database.
Toolbag
A bag of small tools for getting unstuck: first step splitter, focus sprint, brain dump, grounding.
LinkedInbox
Turn a LinkedIn connections export into a searchable, segmented view of your network.