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Buying Calculator or MathJournal MM

NEW: MathJournal 2.1
Regular $249; Student $119

NEW: MathJournal Multimedia 2.1
Regular $299; Student $139

UPGRADE: from MathJournal Classic to MathJournal
Regular $100; Student $50

UPGRADE: from MathJournal 1.1 to MathJournal 2.1 (details below *)
Regular $69; Student $39

* If you own MathJournal and would like to upgrade, do this:
1. Email the following information to
NOTE: Do not email your credit card number to xThink.
  • Your MathJournal user name
  • Your MathJournal email address
  • The billing address of the credit card you will use for your purchase
  • Your phone number
2. xThink will call you to arrange your upgrade purchase.
You will be charged $69 for the upgrade; $39 if you are a student.

Choose the xThink product that is right for you

See our feature comparison for xThink products:

Invoice for German customers

For German customers it is now possible to order xThink Calculator and MathJournal MM by invoice (in Euro) directly from xThink Germany. Please click here and leave your contact information.

Deutschen Kunden ist es jetzt möglich xThink Calculator und MathJournal per Rechnung zu bestellen (in Euro). Bitte hinterlegen Sie Ihre Kontaktinformationen auf unserer Kontaktseite.

Orders via phone or fax

xThink accepts credit card orders over the phone or by fax. Check and credit card payments can also be mailed. We accept American Express, Visa, MasterCard and Discover. Checks for U.S. funds drawn on U.S. banks only are also accepted by xThink. Checks must be MICR encoded.

Purchase orders are accepted from credit-worthy USA organizations. Other purchase orders are accepted with prior approval for orders above $200.00. Purchase orders must be 'net 30' terms.

Orders received at xThink will get an email response with instructions for downloading and activating the software within the next business day.

Orders via PayPal

If you want to pay via PayPal please contact us.

Contact Information

xThink Corporation
Attn: xThink Sales
16908 Bar Harbor Bend,
Round Rock, TX 78681


+1 (512) 238 1888

+1 (512) 238 1898

Prices listed in US dollars and do not include local taxes or local customs charges.
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