# CASify: TI-Nspire CAS Tutor — Learn your graphing calculator

> CAS calculator guide for high school math exams, offline and ad-free. (iPhone/iPad app by Lennart Koch.)

- Source: https://appshunter.io/ios/app/casify-ti-nspire-cas-tutor/id6776131288 (this page in markdown: same URL + `.md`)
- Developer: [Lennart Koch](https://appshunter.io/developer/6776131290)
- Category: Education, Reference
- Price: Free (on sale, was $3.99)
- Age rating: 4+
- Requires: iOS 16.4 · 37 MB
- Languages: German (Germany), American English
- Released: 2026-06-26
- Data updated: 2026-10-08
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/casify-ti-nspire-cas-tutor/id6776131288/reviews.md

## What is CASify?

We believe that a CAS calculator shouldn't be an obstacle. It's the tool you use to write your exams and, in the end, your finals. It takes work off your hands. It solves equations, it differentiates, it integrates. But only if you know where to find it and what to type.

That's why you won't get a manual here, but guides for the material you'll actually come across. From the basics through algebra and systems of equations to calculus, geometry, vectors and probability, sorted by grade from 7th grade all the way to your finals. All offline, no account, no ads, pay once and you're done.

CASify is a learning app that explains your CAS calculator to you calmly and at your own pace. The app is made especially for high school students and includes guides for calculus, algebra, probability, geometry and the basic operation of the calculator.

What you'll find in the app:

Clear guides for every important function and key, in the right order
Long menu paths laid out clearly with CASify, so a confusing route turns into a sequence you can follow
Formulas in real CAS notation
A favorites feature that lets you mark the most important functions
From 7th grade to your finals, CASify is sorted by grade, so the app stays clear and easy to understand for everyone
Search helps you find relevant content quickly

Content-wise, CASify covers what you really come across in high school. From the basics through algebra and solving systems of equations to calculus, geometry, vectors and probability. Every function is explained with fitting examples as well as small tips and tricks, so you don't just know how something works, but also why it works that way.

That's what makes CASify valuable when it really matters, whether you're preparing for your next exam or for your finals. Instead of clicking through endless menus, your head is free for what actually counts.

What CASify won't put in your way:

The app works completely offline, whether you're studying at home or on the go
You don't need an account or registration and can get started right after installing
There are no ads and your usage isn't tracked
No data is collected about you
You only pay once and then have full, permanent access to everything, with no hidden costs

CASify is available in German and English. You can also choose between a light and a dark theme and use the app on both iPhone and iPad.

In the end, it's about a pretty simple idea. Nobody should fail because of how to operate the calculator when they understood the math long ago. You should be able to focus on the problem and not on searching for the right key. The app explains which key that is and why it does the right thing.

## Key features

- Clear function and button instructions
- Simplified menu path navigation
- Formulas in CAS notation
- Favorite function marking
- Sorted by grade level
- Quick search functionality
- Offline operation

## Chart rankings

- #194 in Top Paid · Education (US App Store)

## Is CASify safe?

Not enough ratings yet to assess CASify.

## Is CASify legit?

CASify: TI-Nspire CAS Tutor has limited verification signals. The AppsHunter Legitimacy Score for CASify is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/casify-ti-nspire-cas-tutor/id6776131288/reviews.md

### 5/5 — Immernoch Hilfreich

*2026-07-06*

Super App. Bin mittlerweile schon im Studium und die App ist auch hier noch hilfreich. Für mein Abi wäre es damals genau die richtige Option gewesen.

## Frequently asked questions about CASify

### What is CASify?

CASify is a learning app designed to explain the functions of a CAS calculator for high school students. It covers topics like analysis, algebra, statistics, and geometry, with clear instructions and examples.

### What math subjects does CASify cover?

CASify covers essential high school math subjects including Analysis, Algebra, Stochastics (Statistics), Geometry, and Vectors. It also includes basic operations for the calculator.

### Can I use CASify offline?

Yes, CASify works completely offline. You can use it for studying at home or on the go without needing an internet connection.

### Does CASify have ads?

No, CASify is ad-free. The app does not contain advertisements, and your usage is not tracked.

### How much does CASify cost?

CASify is a one-time purchase priced at $9.99. This grants you permanent access to all features without any hidden costs or subscriptions.

### What devices is CASify compatible with?

CASify is available for iPhone, iPad, and iPod. It supports both light and dark app displays.

### How often is CASify updated?

The app was last updated on July 14, 2026, with version 1.1. Updates typically include improvements and new content to enhance the learning experience.

### Do I need to create an account to use CASify?

No, you do not need an account or registration to use CASify. You can start using the app immediately after installation.

## Version history (last 4 releases)

### 1.2.0 — 2026-09-21

Your calculator is only useful if you know how to use it. That applies to your CAS just as much as to CASify. That's why, in this version, CASify explains itself for the first time.

New tutorial: You choose what you want explained. How the home screen is laid out, what's inside a chapter, why input and results look the way they do on the display. If you want everything in order, start with the basics. If you only want to look up one thing, jump straight to it. You can find the tutorial anytime in Settings.

Set up in a few steps: When you first open the app, you choose your language, grade and appearance. That way you can tailor CASify to you right from the start. Later on, you can fine-tune everything in Settings.

We've also made improvements in many places. Navigation runs more smoothly, the layout looks cleaner, and the texts in the app are clearer.

### 1.1 — 2026-07-14

We've refreshed the design and improved usability throughout the app. CASify now feels clearer and smoother to use, so you can focus on the math, not the interface.

### 1.0.1 — 2026-07-05

In diesem Update haben wir kleinere Fehlerbehebungen vorgenommen und das Design der App weiter verbessert, damit du dich noch einfacher zurechtfindest.

### 1.0 — 2026-06-26

No release notes.

## Apps similar to CASify

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Maths Formulas](https://appshunter.io/ios/app/maths-formulas/id645412785) | 2.5 (2) | $1.99 | Education |
| [Exponential Growth Calculator](https://appshunter.io/ios/app/exponential-growth-calculator/id1662901079) | 5.0 (2) | Free | Education |
| [Japanese Vocabulary & JLPT](https://appshunter.io/ios/app/japanese-vocabulary-and-jlpt/id6745514473) | 5.0 (2) | Free | Education |
| [Sine Cosine Tangent Calculator](https://appshunter.io/ios/app/sine-cosine-tangent-calculator/id1622554726) | 4.0 (1) | Free | Education |
| [Daily Reflections - Roots](https://appshunter.io/ios/app/daily-reflections-roots/id6756069074) | 4.9 (20) | Free | Education |
| [CNC Code](https://appshunter.io/ios/app/cnc-code/id6754204124) | — | Free | Education |

## More apps by Lennart Koch

- [TI-Nspire CX CAS Manual CASify](https://appshunter.io/ios/app/ti-nspire-cx-cas-manual-casify/id6787475078)

All apps by Lennart Koch: https://appshunter.io/developer/6776131290

## Related topics

[ti nspire](https://appshunter.io/ios/topics/ti-nspire)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*