Assumption Mapper
List your product assumptions, score them by risk and uncertainty, and get a prioritized test plan. Stop building on guesses.
How Assumption Mapping Works
List Assumptions
What are you assuming about value, usability, feasibility, or viability?
Score Each One
Rate risk (impact if wrong) and uncertainty (how confident you are).
Map on a Matrix
See which assumptions fall into Test Now, Monitor, Note, or Park.
Get a Test Plan
Receive suggested validation methods for your riskiest assumptions.
Add an Assumption
Your Assumptions (3)
Assumption Matrix
Prioritized Assumptions
Test Now
High risk + high uncertainty. Validate these first.
Suggested validation: Validate the business model and market positioning.
Suggested validation: Put a prototype in front of users and watch them use it.
Monitor
High risk but you have some confidence. Keep an eye on these.
Keep watching: Set up tracking for this assumption. If uncertainty increases, move it to Test Now.
Test Plan
You have 2 assumptions that need immediate validation. Here is your recommended testing order, prioritized by combined risk and uncertainty score.
Users will pay for this feature
Viability assumption. Priority Score: 16.
Users can complete the core flow without help
Usability assumption. Priority Score: 9.
Save Your Assumption Map
Get a copy of your prioritized assumptions and test plan.
Weekly SaaS ideas + PM insights. Unsubscribe anytime.
Product Discovery Handbook
A full guide to running discovery, from assumption mapping to user interviews and validation experiments.
Jobs to Be Done Framework
Understand what job your users are hiring your product to do. Pairs well with assumption mapping.
RICE Score Calculator
Once you have validated your assumptions, prioritize features using the RICE scoring framework.
What is Product Discovery?
The process of deciding what to build by testing assumptions before committing engineering resources.