BITCOIN PAYMENT AT WWW.TI89.COM  

Please select among the 3 Bitcoin payment options:

Buy with Bitcoin

To pay for 1 MADE EASY app for $49.95 using Bitcoins.

Buy with Bitcoin

To pay for 3 MADE EASY apps for $100 using Bitcoins.
Buy with Bitcoin To pay for CALCULUS or DIFFERENTIAL EQUATIONS MADE EASY app for $149.95 using Bitcoins.

 

HOW IS THIS GOING TO WORK? 
Once bitcoin payment is made and we received your calc ID (look under F1 : ABOUT)  at support@ti89.com we will immediately
email you back your activation key. Then download your app at www.ti89.com/apps/ , transfer it to your calculator as explained
at www.ti89.com/thankyou.htm and enter the provided activation key when prompted. You are now ready to enjoy the app. This takes less than 5 minutes.   

Contact us with any questions you may have at : support@ti89.com