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What can CompareMage help you compare?
CompareMage is a small set of decision-support utilities. Each page puts two options on the same scale, shows the math, and leaves the choice with you. Launch tools calculate in your browser from the numbers you type.
Launch comparisons
Ten working utilities across everyday value, work, money, and home. No thin “Brand A vs Brand B” pages.
Everyday value
Unit prices, subscriptions, and cost-per-use checks for purchases you make this week.
Unit Price Comparison
Normalize two or three packages to the same unit so a lower shelf price is not mistaken for a better deal.
Percentage Difference Calculator
Put two numbers on the same scale and see both the dollar-style gap and the two common percentage readings.
Subscription Cost Comparison
Turn weekly, monthly, quarterly, and annual plan prices into the same monthly and yearly totals, then test how long you will keep the service.
Price per Use Comparison
Divide what you pay by how often you actually use the thing — a gym, a tool, or a premium appliance.
Work and career
Pay-rate and offer comparisons that put salary, hours, and benefits on one scale.
Money and financing
Side-by-side loan, lease, and payment-path math using the numbers you enter.
Loan Comparison
Amortize two fixed-rate installment loans and see which one costs less over the full term — and which one has the lower monthly payment.
Lease vs Buy Calculator
Put a closed-end lease next to a purchase loan and compare cash over the lease term, plus whether the purchase path still holds equity.
Home and energy
Housing and vehicle operating-cost comparisons with editable assumptions.
Rent vs Buy Calculator
Compare a renter who invests the avoided down payment with a buyer who builds equity, using assumptions you can edit.
Gas vs Electric Cost
Estimate annual fuel versus charging cost from the miles you drive and the rates you actually pay, then optionally test a purchase-price gap.
The math is inspectable
Every public comparison states its formula, assumptions, and limits. Results update as you edit the inputs.
Facts, then judgment
The tool can say which path costs less under your numbers. It will not say that path is definitely right for you.
Your numbers stay local
Launch comparisons run in the browser. CompareMage does not upload salaries, loan balances, or home prices.