Integers

Personal Finance

Retirement Planning Software for Households

Your whole financial life, by the numbers

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byChris Gil

Launched November 5, 2026· Week 36

Exclusive offer for PostYourStartup users

Free Beta Access + Free for 1 year after

About

Integers is retirement planning for people who want to see the math. Most planning tools hide their assumptions or bury the answer under a wall of charts. Integers takes the opposite approach: run your household finances like a business, with full transparency into every number. Integers produces an income statement, cash flow statement and balance sheet for every year from today to the end of your plan, working years and retirement in one set of books. A federal and state tax engine sits underneath, and Monte Carlo simulation shows how likely the plan is to hold up. Every assumption is visible and editable, and users can build scenarios to compare against their baseline before making a major decision. Nothing links to your bank. You enter your numbers, and your data stays private. Two read only demo accounts on useintegers.com let anyone explore the full product without signing up. Built for serious DIY retirement planners. Now in private beta.

From the founder

Chris Gil

Who is Integers for?

Integers is for serious DIY retirement planners. It is built for people who want to see the math behind their financial plan.

What problem does Integers solve?

Most retirement planning tools hide their assumptions or bury the answer under a wall of charts. We solve this by providing full transparency into every number and assumption.

How is Integers different from the alternatives?

Unlike other tools, Integers produces an income statement, cash flow statement, and balance sheet for every year of your plan. It also has a federal and state tax engine underneath and shows every assumption as visible and editable.

How much does Integers cost?

Integers is free during the beta and for a year after. There is nothing to install.

What's next for Integers?

This Year feature: It lays out the year’s actual paychecks, RSU vests, bonuses and other income entry by entry against a running federal return, so you can see at any point in the year whether your withholding is on track to break even and adjust before the return is filed. It turns the annual tax surprise into something you watch and steer during the year.

Startup Battle record

Integers went 2–0 (100% wins) in the Startup Battle in week 35, where visitors pick the better of two startups head to head. It faced 2 different startups.

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