To make sure you understand our donation concept correctly, we've written this policy.

Goods/services offered: Donations are voluntary payments to support our work on math games.We offer our math games for free to everyone, whether he/she has donated or not.

Refunds: If someone has misused your PayPal account, or if you just want your money back for any other reason, please contact us as webmaster@hanssoft.com within the first 30 days after the donation (after 30 days it's still possible, but gets complicated for both of us).

Currencies: We currently support the currencies that are available on PayPal.

Taxes: Even though we use the word donation , like many other software developers who offer their work basically for free, donations are not tax-deductible as we are not an IRS qualified 501c3 organization.

For more information, please read our Terms of use and our Privacy Policy.

If you are looking for support, please take a look at our Contact page .