ROI Calculator
ROI, payback period and annualised return, so time stops hiding
What is ROI Calculator?
Headline ROI is the easiest investment figure to quote and the easiest to mislead with, because it ignores time. This free calculator takes the amount invested, the revenue it generated and the number of months it took. It returns plain ROI along with the payback period and the annualised ROI, which is the number that lets you compare investments of different lengths fairly.
The page's example makes the point. Two campaigns both return 150% on a 100,000 spend. One does it in 3 months (2-month payback, about 1,462% annualised). The other takes 24 months (16-month payback, about 58% annualised). The headline numbers are identical, but the results are completely different. The notes also cover what ROI can't show, like risk and the cost of your own time.
It works in any currency, needs no sign-up, and stores nothing. It's one of 33 free tools on Web Tool Bench, made by Sanan for founders and marketers who want the arithmetic shown.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
there's a whole class of info product type small bets that I think can get to money very very quickly comparison to let's say an app right an app usually much longer ramp up people need to know about it most engineering types would want would rather just write code and they would you know not talk to anybody
Info products reach money faster than apps
For solo engineers itching to ship, the shortest path to revenue is not another app — it's an info product. A book or a short Udemy course gets in front of people already searching (and whose employers often pay), while apps require a long ramp of awareness-building. Use the info product to seed the eventual app's audience.
they built a product that did very accurate gate tracking for riders... they used that one tool as a way to basically aggregate all of these equestrians in the world and then went deeper into their workflow... a safety tracking feature where basically when you turn that on if there's impact someone that you select is notified
Wedge Deep Before Expanding — Equilab Went From Gait Tracking to Safety Alerts to Community
Start with one precise problem, get people to depend on it, then deepen into adjacent pain points within the same workflow — not copy what competitors do in other categories. Equilab's gait tracking gave them the equestrian audience; safety alerts made the app part of relationships; community tied users to a specific barn. Each step made the product stickier without changing the target user.
There's a play for whatever you're stuck on.
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