Disclaimer
Disclaimer
Last updated 22 October 2026.
Independence from Texas Instruments
This website is an independent, third-party tool. It is not affiliated with, sponsored by, authorised by, or endorsed by Texas Instruments Incorporated.
Nothing on this site is an official Texas Instruments product, and no statement here should be read as indicating any relationship with Texas Instruments other than the descriptive use of a trademark noted below.
Trademark usage
TI-84 Plus™ and TI-83 Plus are trademarks of Texas Instruments Incorporated. They appear on this site for one reason: to describe the keypad layout and feature set being emulated, because that is the layout students are taught on and the one their hands already know.
All other trademarks are the property of their respective owners. Desmos and GeoGebra are referenced in comparison tables to describe publicly documented feature sets; those references imply no affiliation or endorsement either.
Exam use
No online calculator of any kind is permitted during official SAT, ACT or AP examinations. Use of this site during a test would violate the testing organisation's rules regardless of what any calculator claims.
This site exists for study and rehearsal only. It is not a claim of exam approval, and it does not make this tool permissible in any proctored setting. Only Texas Instruments' own hardware appears on official permitted-device lists.
Educational tool, not professional advice
The worked solutions, tutorials and calculators on this site are educational aids. They are not a substitute for professional advice in engineering, architecture, medicine, finance, or any field where an incorrect calculation carries real-world consequences.
Verify any result that matters against your own working or an independent source before acting on it.
Accuracy
Reasonable efforts are made to ensure the content is correct, and the step solver is tested against a regression suite. Even so, no warranty is given that any particular worked solution is free of error. If you find a mistake, report it — corrections are made promptly.
External links
Links to external sites are provided for reference. Their content is not controlled by this site, and linking to them does not constitute endorsement. Follow external links at your own judgement.
Availability
The calculators are provided free of charge with no guarantee of continuous availability. They may change, be withdrawn, or become temporarily unavailable without notice.