This FAQ answers common questions about using the calculator site, mobile mode, graphing problems and exam practice.
Is this calculator free?
Yes. The website is designed as a free browser-based calculator and student guide for practice and learning.
No login is required for the static version.
Where can I find technology credits?
Project and calculator technology credits are listed on the About page.
Can I use it for exams?
Use it for learning and practice. Formal exams have their own rules about approved calculators, devices and software.
Always follow your school, teacher, testing center or exam board.
Why does the calculator need internet?
The calculator application uses externally delivered runtime resources. The local site pages can be cached, but the interactive calculator should be treated as network-dependent.
If the calculator does not load, check internet connection, browser blocking, script blockers and network restrictions.
What should I do when the graph is blank?
Check Y= selection, turn off old stat plots, reset the window with Zoom Standard, and verify that the equation is typed correctly.
A blank graph usually means view/settings/input problems rather than a broken calculator.
Quick reference table
| Question | Quick answer |
|---|---|
| Free? | Yes, for learning and practice |
| Official TI site? | No |
| Installable? | Yes, browser-dependent PWA support |
| Fully offline? | Site shell yes; calculator runtime not guaranteed |
| Good for graphing? | Yes, use Y=, WINDOW, ZOOM, TRACE and GRAPH |
| Good for statistics? | Yes, use STAT lists and calculations |