A monorepo of standalone, single-file web tools. No build step, no dependencies — just
open a folder. Each calculator opens as a walkthrough that asks one question at a time and
explains what each number means; an advanced view puts every input on one page.
Airbnb or invest
Should the place earn as a short let, or should the money sit in a unit trust or government securities? For buying, building, or a place you already own.
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Build or invest
Should your money build a rental block, or just sit in the market? Models the construction drag, the lease-up, and what the finished block is worth.
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Brick by brick
Should you build a home a bit at a time, or rent and invest instead? Works out when you move in and whether you ever finish.
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Rent or buy
Should you buy a home, or rent and put the same money in the market? Shows the exact year buying overtakes renting — or that it never does.
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