Rate evidence, not optimism
Score what you have discussed or observed. If a topic has not been tested, use a lower confidence rating and plan a specific conversation.
Founder team assessment
Co-founder compatibility test
Score the quality of your alignment across eight founder topics and turn the result into a more honest conversation.
- Free to use
- Runs in your browser
- No details saved
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Enter your assumptions
Complete every rating based on evidence from real conversations and shared work.
Metric--
Metric--
Metric--
Complete every rating based on evidence from real conversations and shared work.
How to use this tool
Use the output as a decision prompt
Compatibility is not similarity. Strong founding teams can disagree on skills and perspective while remaining aligned on commitment, values, decision rights, and how conflict is handled. Use the score to locate conversations that still rely on assumptions.
Complete the assessment independently, then compare answers and examples. A high score does not replace references or a trial project, while a low score is not automatically a rejection. The useful output is a clearer understanding of where the partnership needs evidence.
Method and interpretation
What the calculation is designed to show
Review the weakest areas
The overall percentage is less important than a major gap in commitment, trust, money, or conflict handling.
Repeat after shared work
Complete the test again after a two-to-four-week trial project and compare what changed.
Useful applications
When this tool can help
Revisit the calculation when assumptions or evidence change. Keep the inputs with the result so another founder or adviser can understand the reasoning.
- Prepare a first serious founder discussion
- Compare answers after several meetings
- Plan topics for a trial project
- Identify assumptions before equity talks
- Structure a partnership retrospective
- Document unresolved founder risks
Questions and limitations
Understand what the result cannot decide
What is a good co-founder compatibility score?
There is no universal passing score. Treat 80% or more as a signal of broad reported alignment, not proof. Investigate every low area and verify high ratings through examples, references, and shared work.
Should both founders take the test?
Yes. Independent answers are more useful than one person scoring the relationship. Compare the reasons behind each rating rather than averaging away meaningful disagreement.
Can compatible founders have different personalities?
Absolutely. Complementary personalities and skills can be valuable. The test focuses on operating alignment and trust rather than personality similarity.
Does this replace a co-founder trial project?
No. The assessment organises conversations. A trial project reveals actual communication, judgment, pace, and accountability.
Turn analysis into a founder conversation
Build the company with someone who complements you.
Create your profile and meet founders who can challenge the assumptions with you.
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