Compare real choices with transparent math.
Miser Tools turns a decision into a structured, deterministic comparison — real math, transparent assumptions, and a confidence score that's honest about how sure you should actually be.
No AI decides your result. Every recommendation comes from calculations you can inspect.
Why it's different
Deterministic, not AI-decided
Every recommendation comes from visible calculations.
Transparent breakdown
See how your inputs, priorities, and assumptions affect the result.
Honest about uncertainty
Decision Confidence shows when the answer is strong — and when it isn't.
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GeneralCompare Any Two Options
Compare almost anything.
Structure a decision using your own weighted criteria.
How Miser Tools works
Enter the facts
Tell us the real numbers and details for each option.
See the comparison
Miser Tools scores the factors using transparent rules and your priorities.
Understand the recommendation
See which option leads, why it leads, how confident the result is, and what could change it.
What a result looks like
Leasing is the recommendation.
58 / 100
Medium
Why: Lower effective monthly cost was the biggest factor once insurance, fuel, and resale value were all counted.
What could change this: If the buy option's resale value were about $2,000 higher, the recommendation would flip.
Explore by decision
Free vs Miser Pro
Free
Every tool is free to use, fully, with no signup required to see your result.
Miser Pro
$8.99/month adds unlimited saved decisions, full downloadable reports, and deeper scenario analysis for when you want to go further.
How Miser Score works
Each option is scored across a handful of weighted dimensions — usually financial cost plus a few qualitative factors — normalized against a realistic fixed range, not just against the other option, so a $10 difference and a $10,000 difference are never treated as the same size of deal. Read the full methodology →
Why Decision Confidence matters
A close result built on guaranteed numbers is different from an equally close result built on rough estimates — Decision Confidence says so directly instead of presenting every result with the same false certainty. Read the full methodology →