Sponsor a calculator. $19/month.
One clearly labelled sponsor per calculator. No tracking, no auctions, cancel anytime.
$19per calculator / month
$49whole site / month
1sponsor per page
0trackers or cookies
Why so cheap?
No sales team and almost no hosting costs, so we pass that on. Similar calculator sites list far more:
| Site | Slot | Listed price |
|---|---|---|
| OhCalc | State calculator sponsor | $500 / mo |
| OhCalc | Homepage sponsor | $2,000 / mo |
| Mortgage FV Calculator | Comparison-table slot | from $750 / mo |
| Mortgage FV Calculator | One calculator page | from $2,000 / mo |
| Deusly (UK) | Calculator sponsorship | from £350 / mo |
| Boring Math (UK) | Single calculator | £49 / mo |
| ClearSums | Single calculator | $19 / mo |
Prices from each site's public advertise page, checked Oct 2026.
Want a slot?
Tell us the calculator and your product. We reply fast.
Get in touch {ARR}