Blog · a series
How we charge
Billing arithmetic, shown: which way every rounding goes, the one rule that stops a unit being priced twice, and the refund button that does not ask why.
3 parts · about 10 minutes to read them all
Part 1 · 4 min read
Ask for your money back, any time, and we will not ask why
If you have paid for time you are not using, there is a button that gives it back. No window, no reason, no email to support. Here is exactly how the number is worked out, and where we round.
Part 2 · 3 min read
Every rounding goes to the customer
Software is full of places where the arithmetic is not exact. Each one is a decision about who absorbs the fraction, and we made that decision once, in advance, for all of them.
Part 3 · 3 min read
One unit, one rater: the rule that stops us billing you twice
When two systems can both price the same thing, eventually both of them do. Here is the single rule we hold to instead, and the one line of SQL that enforces it.


