Hazte miembro
Friend
$3
/mes
A small monthly thank-you that helps keep BondWorks, ElementWorks, and ChemWorks free and ad-free for every student.
Support me on a monthly basis
Updates on new free tools like CalcWorks
Supporter
$5
/mes
The price of one coffee a month keeps every free chemistry tool running, with no ads and no sign-up. Thank you for being part of it.
Support me on a monthly basis
Early looks at new tools like CalcWorks
Champion
$10
/mes
For those who want to do a little more. Your support funds new free tools, and you get a say in what I build next.
Support me on a monthly basis
Vote on which free tool I build next