Nomini

The sticker price of a major purchase is rarely the number that matters. A car that costs less upfront might have higher fuel, insurance, and maintenance costs over five years. A new appliance might be cheaper than repairing the old one — or might not, once installation and energy use are factored in. Nomini lets you model the complete cost of ownership for any two options and see which one actually costs less over your chosen time horizon.

HOW IT WORKS
Set up a comparison with two options — buy versus lease, Option A versus Option B, repair versus replace. Enter every cost associated with each option: purchase price, monthly payments, insurance, running costs, maintenance, and residual value. Choose a time horizon — one year, three years, five years, ten years — and the app calculates the total cost of each option over that period, including the present value of ongoing costs. The result shows clearly which option is more expensive and by how much.

KEY FEATURES
• Two-option comparison — model any cost comparison with complete flexibility in what costs you include
• Time horizon — set any comparison period from 1 month to 30 years
• Cost categories — enter purchase price, monthly costs, annual costs, one-time costs, and residual value
• Inflation adjustment — apply an inflation rate to project future cost increases accurately
• Total cost view — see the complete cost of ownership for each option side by side
• Preset templates — start from common comparison types: buy vs rent, new vs used, repair vs replace
• Saved scenarios — save any comparison and return to update it as costs change
• Sensitivity — adjust one variable and see how the result changes
• Offline — all calculations performed on-device with no account required

WHEN TOTAL COST ANALYSIS MATTERS
The gap between purchase price and total cost is largest for:

Cars — depreciation, insurance, fuel, servicing, and financing costs can make a "cheaper" car significantly more expensive over five years than a "more expensive" one with better fuel economy and lower insurance.

Appliances and electronics — energy costs over a decade can exceed the price difference between an efficient model and an inefficient one. Repair costs on an older model may push the total above the cost of replacement within two years.

Housing — rent versus mortgage comparisons require factoring in opportunity cost, maintenance, transaction costs, and property appreciation to get a meaningful answer.

Business equipment — lease versus buy decisions have significant tax and cash-flow implications that are invisible if you only look at the monthly payment.

GREAT FOR
• Anyone making a major purchase and wanting to compare two options properly
• Households deciding between buying and leasing a car
• Small business owners evaluating equipment financing options
• Homeowners comparing appliance repair versus replacement
• Renters thinking through buy versus continue renting
• Anyone who wants to think in total cost of ownership rather than upfront cost

PRIVACY
Nomini stores all comparison data locally on your device. No account is required, no data is shared, and the app works entirely offline.