mcGraph CAS · Last updated: November 9, 2026
These Terms of Service ("Terms") are a contract between you and Butterfly AI LLC ("we", "us") for mcGraph CAS (the "App"), a graphing calculator. The Android package name is com.nspire.calculator. By downloading, installing, or using the App from Google Play, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the App.
mcGraph CAS is a calculator that runs on your device. Calculator accepts expressions and can return exact values, including fractions, roots, and powers. Graphs plots a function and can show a value table. The App also includes a template palette, a catalog, and trigonometric functions. The default angle mode is radians.
The home screen lists additional tools. Only Calculator and Graphs are finished. The other entries are not available as working features.
The App is free. It does not require an account. It does not include advertising, analytics, subscriptions, or in-app purchases. It does not use the internet. Expressions, results, graphs, and settings such as the angle mode stay in memory while the App is open and are discarded when you leave. We may change, pause, or stop features or the App itself.
The App is not directed at children under 13 (or the higher minimum age required where you live). If you are under the age of majority where you live, you may use the App only with permission from a parent or guardian, and that adult agrees to these Terms for you.
We grant you a personal, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control, for your own use. You may not sell, rent, sublicense, or commercially exploit the App. You may not copy, modify, reverse engineer, or extract its software except where the law does not allow this restriction.
The App is a general-purpose calculator. A result, graph, or table can be incomplete or wrong, including because of an entry error, a limit of the calculator, or a bug. Check results that matter. Do not rely on the App alone for engineering, medical, legal, financial, tax, or exam decisions. We do not provide professional advice.
The App does not keep a saved history and does not include calculator contents in a device backup. Closing or uninstalling the App discards what was on screen. You are responsible for the device you use.
You agree not to:
The App, including its name, screens, and software, belongs to Butterfly AI LLC or its licensors. These Terms do not sell you that property. They only let you use the App as described above. "mcGraph CAS" is the name we use for this App.
mcGraph CAS is an independent app. It is not affiliated with, endorsed by, or sponsored by Texas Instruments. TI-Nspire and related marks belong to their owners.
If you download the App from Google Play, Google's terms also apply to the download, payment (if any), and refunds. The App itself has no purchases. We are not responsible for a store, a device, or a network we do not control.
How the App handles information is described in the Privacy Policy. That policy is part of these Terms. The App does not collect personal information and does not send calculations off your device.
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE." TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT GUARANTEE THAT A RESULT, GRAPH, OR TABLE IS ACCURATE, OR THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, OR AVAILABLE IN EVERY COUNTRY.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, BUTTERFLY AI LLC AND ITS OFFICERS AND SUPPLIERS ARE NOT LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, DATA, OR GOODWILL, ARISING FROM THE APP OR FROM RELIANCE ON A RESULT. OUR TOTAL LIABILITY FOR ANY CLAIM RELATING TO THE APP WILL NOT EXCEED USD $20. SOME PLACES DO NOT ALLOW THESE LIMITS. WHERE THEY DO NOT, OUR LIABILITY IS LIMITED TO THE MAXIMUM THE LAW ALLOWS. THESE LIMITS DO NOT EXCLUDE RIGHTS THAT CONSUMER LAW IN YOUR COUNTRY DOES NOT ALLOW US TO EXCLUDE.
We may update these Terms by posting a new version on this page and changing the "Last updated" date. If you keep using the App after the new date, you accept the updated Terms. You may stop using the App at any time by uninstalling it. We may stop offering the App. Sections that should survive by their nature, including intellectual property, disclaimers, and limits on liability, survive.
These Terms are governed by the laws that apply where Butterfly AI LLC has its principal place of business, without regard to conflict-of-law rules, except where consumer protection law where you live must apply instead.
Questions about these Terms: [email protected].
Related: Privacy Policy