CASify: TI-Nspire CAS Guide

Finally understand what your CAS calculator can really do. CASify explains every function step by step — calm, clear, and without the lecture.

CASify is a learning app that explains your CAS calculator to you, calmly and thoroughly. The app is designed specifically for upper secondary school students and includes guidance for Analysis, Algebra, Statistics, Geometry, and basic calculator operation.

What you will find in the app:

• Clear, step-by-step instructions for every important function, key by key and in the correct order, • Long menu paths presented clearly with CASify, turning a confusing route into an easily traceable sequence, • Formulas shown in authentic CAS notation, • A favourites feature that lets you mark the functions that matter most to you, • From year 7 through to your final exams, CASify is organised by grade level, keeping the app clear and understandable for everyone, • The search function helps you find relevant content quickly.

In terms of content, CASify covers everything you will genuinely encounter in the upper secondary curriculum: from basic operation, through algebra and solving systems of equations, to analysis, geometry, vectors, and statistics. Each function is explained with suitable examples as well as helpful tips and tricks, so that you understand not only how something works, but also why it works that way.

This is where CASify becomes particularly valuable, namely when preparing for your next exam or for your final school-leaving examinations. Instead of clicking through endless menus, you can keep your mind free for what truly matters.

What CASify does not require of you:

• The app works entirely offline, whether you are studying at home or on the go, • You need no account and no registration, and can start using it immediately after installation, • There are no advertisements, and your usage is not tracked, • No data about you is collected, • You pay only once and then have full, permanent access to everything, with no hidden costs.

CASify is available in both German and English. You can also choose between a light and a dark app appearance, and use the app on both iPhone and iPad. Ultimately, CASify is built around a rather simple idea: you should be able to concentrate on the mathematics itself, rather than on searching for the right key. Which key that is, and why it does the right thing, is something the app will explain to you.