CalcHaven.com
2020 · Svelte
Making this thing was a total joy: I did the first version in three hours, then took another three to add a CSS theme and the supporting front page and put it online. Then I used it as a platform for experimenting with a couple different backend options and deployment strategies over a few weeks.
Anyway, if your primary method of sales is cold calls (or you’d like to see what the numbers look like if it were), you can use this to project growth of SaaS or other subscription business over 12 months based on your own pricing, costs, customer lifetime and call, call-to-conversation, and conversation-to-sale rates.
https://calchaven.com/cold-calling
I have some ideas about what properly shareable online calculators might look like, and more such I’d like to build, but it’s not top priority at the moment.