What This Habit Costs
“A $4 coffee most workdays — what's that a year?”
The coffee, the lunch, the Friday takeaway — added up over a year and over five. Then three very different answers to 'what if I'd saved it instead', clearly labelled as the assumptions they are rather than one confident number nobody can actually promise.
- As many habits as you like, each marked keep or count
- A week, a month, a year, and up to twenty years ahead
- Three growth assumptions side by side — including the jar, which can't be wrong
- Compounded from the twelfth root of the yearly rate, not the lazy divide-by-twelve
- And the same total in hours of your life, if you put your pay in
- This one is finished and tested — not on the build list
- It will be $9, same as every other tool
- One email when it goes up, no list, no spam
Three steps, then you're done
What one costs, and how often.
The total only counts those.
They're assumptions, not forecasts, and it says so.
Questions
Do I need to install anything?
No. Each tool is a single file. Double-click it and it opens in Chrome, Edge, Safari or Firefox — whichever you already have. No account, no password, no software.
Does anything get uploaded?
No. Your numbers and files never leave your computer — the tools have no way to send them and no internet connection is needed to run them. You can switch your wi-fi off and they still work.
I'm not good with computers. Is this too hard?
The first thing every tool does is walk you through it in five short screens with pictures. Then there's a button that fills it with example numbers so you can watch it work before touching anything.
Will it work on my phone?
Yes. Email yourself the file and open the attachment, or drop the files in iCloud Drive, Dropbox or Google Drive and open them from there — then they're on every device you own.