Free for everyone
The Humble Toolbox.
Built by people who've got these sums wrong before.
Calculators, checks and worksheets for people starting a business. Put your real numbers in and get a straight answer. No motivational speeches required.
Money
Runway, pricing and whether you can afford the leap.
Product
Testing the idea and deciding what to build.
- Check
Is this idea worth 30 days?
Five questions about your idea and a straight answer in your inbox, with what to do either way.
Start - Worksheet
Starting Snapshot
Separate what you know about your idea from what you're guessing, and find the one question that matters most.
Download - Worksheet
Assumption Ledger
Every belief your business depends on, scored by risk, so you test the dangerous one first.
Open it - Worksheet
Alternative Map
What your customers do about the problem today, and what you'd have to prove before they'd switch.
Download - Worksheet
Decision Memo
Continue, narrow, change or pause, written down with the evidence for each.
Download
Customers
Finding the first people who'll pay, and hearing them properly.
- Worksheet
First-Customer Card
One person, one situation, one trigger, and where to find five of them this week.
Download - Worksheet
Problem Receipt
The problem in your customer's own words, with what it costs them and what they do about it now.
Open it - Worksheet
Conversation Notes
One row per customer conversation, with their exact words kept apart from your interpretation.
Download
People
Co-founders, shares and the conversations nobody wants to have.
When you need a break from your own numbers
Founder quizzes
Founder quiz · 8 rounds
The classics
Eight moments that could have ended famous companies. Pick what you'd do, then see what the founders actually did.
PlayFounder quiz · 6 rounds
Breaking point
Six founders who hit a wall. The side of famous companies that never makes the highlight reel. Pick what you'd do, then see what they actually did.
Play