[tlamponi]

Meh, looks nice and UX is OK, but not really useful IMO.

Often, growth means that operating cost also grow, e.g., due to higher infrastructure cost, more worker salaries, expansion into more economic markets with more/new regulations to tackle, ....

That could be at some fixed percentage in a simple model, and is a quite relevant factor which this tool completely misses.

So go for that spreadsheet, it can start really simple, with minimal parameters like this has - but being able to adapt and expand it over time as ones business growths and changes allows for much better and more efficient planning.

[ganeshkrishnan]

also growth percentages changes over time. I had 80% growth first few months and then kept on reducing as revenues increased.

Not sure how to model this natural dampening in growth wrt time and revenues.