Frequently asked questions

  • Can I use it for school / college / university?
    Please do so! We encourage students of all ages to use our Free Basic Calculator. Read the help pages and understand what the examples show you. You can use the Tusanga Calculator or a number of other software applications. This essential issue is you learning and understanding. It is important to be good at math. Nothing comes from nothing. Invest some time and study hard. And try to enjoy the ride!

  • How can I buy a subscription?
    ✔ If you have not already signed-up for a free trial, please do so first.

    ✔ If you already have a free trial and would like to continue using the Tusanga Calculator,
    please purchase a license key from our retailer Share-it.

    For questions concerning the purchase, the Share-it Customer Care Center provides help.

  • May I put a link to this site on my homepage?
    Please feel free to place a link to this site on your homepage. Always link to the main page, as the other pages may change without notice during reorganization of the site.

  • I like your site. How can I help?
    Tusanga would be very grateful for your help. Giving feedback is important for the continued development. Please do so from the Contact Us page. Also letting others know about it by telling them directly, blogging about it, linking to it from you own website or sharing your bookmark to it can help.

  • What is the benefit of signing-up?
    Signing-up gives you access to a more powerful calculator. You'll enjoy a more advanced user interface supporting easy printing of calculations, file uploading, workbook downloading, working on multiple calculations (workbooks) at a time and storing ongoing calculations for months. In addition more mathematical capabilities such as higher limits on size of matrices, number of variables and number of plots etc. provide for larger and more complex mathematical projects.

    A trial is free and lets you use that same powerful calculator for a shorter period of time. Please let us know if you are interested in a Signing-up. You will be asked to provide feedback on your usage and your opinion of the website.

  • I have question on how to use the calculator!
    Please see the Help pages (Getting started, Expressions, Statements, Functions, Examples and Questions pages).

    If you think something is not covered in those pages or you think you have found an error, please use the Contact Us page to let us know. Please be very specific in describing what you wanted to achieve, what you actually did, what the calculator answered and which answer you had expected instead. Due to limited resources available for support, your mail may or may not be answered. Tusanga would like to thank you in advance for taking your time.

  • What are the technical requirements in order to use the calculator?
    In general: You need a modern browser like Internet Explorer 7+, Firefox 3+, Opera 9+, Safari 4+ and Chrome 2+ as well as a connection to the internet.

    To be more specific: A HTML 4.01 and CSS 2.01 capable browser supporting javascript as well as jpeg and png images. Access to the internet through IP port 80 (http) and port 443 (https). In order to improve accessibility on different systems, the use of frames and animations have been avoided.

  • Are my data secure?
    Our product software and infrastructure is updated regularly with the latest security patches. Tusanga plans Solo, SoloPlus and Enterprise include SSL encryption to keep your data safe. Read our Privacy & Security Policy for futher information.

  • What else is Tusanga doing?
    Tusanga also provides test accounts for our email service, which is under development. It encrypts your mails to prevent others from snooping. We are looking for volunteer users to help us test parts of it. Read see Tusanga Mail for futher information.

  • Got more questions?
    If you can't find the answers on this page or on the Help pages, you can Contact Us and we will try to get back to you as quickly as possible.

Try free basic calculator