I'm Lennart, a student in upper secondary school. While preparing for my own Abitur exams, I realised how complex the TI-Nspire CAS really is — even with maths as a main subject. There was no structured, understandable guide. So I built CASify: an app that explains the calculator clearly and step by step.
What we stand for
Understandable, not complicated
Maths is demanding enough on its own. Operating your calculator doesn't have to be, too. CASify translates complex menus and functions into clear, understandable steps.
Verified, not guessed
Every menu path, formula, and example in CASify was tested and verified on a real device. No guesswork, no outdated information, only what actually works.
Privacy is a priority
No ads, no tracking, no data collection. CASify runs entirely offline and works without an account. Because your data is your business, and no one else's.
Say hello
Questions, feedback, or just curious about CASify? I'd love to hear from you, whether by email or on social media.