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Tool preview
Calculator
Decision Helper
Compare two options by total cost over a chosen period so everyday choices are easier to judge.
Option A savings vs B
--Run the calculator to get an AI-style explanation of the result.FAQ
Common questions
What does a positive result mean?
A positive number means Option A is cheaper over the selected period. A negative number means Option B is cheaper by the absolute value of that result.
What kinds of decisions fit here?
This works best for simple everyday comparisons like phone plans, subscriptions, memberships, delivery options, or small purchase decisions where total cost matters more than one single price.
Guide
How to use this tool
Use this helper when a user wants to compare two everyday choices by total cost over time. It keeps the decision narrow, shows a single cost advantage result, and works well for phone plans, subscriptions, delivery options, or other simple comparisons that should not become a full workflow.
Examples
