Turtle Robot vs CASify Lite
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Turtle Robot
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A programming game meant for kids 2 - 6. Based on the board game Robot Turtles. The game does not include instructions. Instructions are explained in the YouTube promo video https://youtu.be/CsDm3EtpfAU
CASify Lite
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CASify Lite: Your Introduction to the CAS Calculator CASify Lite calmly walks you through the basics of your CAS calculator. The app is designed for students in years 7 to 10 and guides you step by step through operating the device, key shortcuts, and the fundamentals of algebra. What you'll find in CASify Lite: Every important key and function is explained in the right order, so you always know exactly what to do next. Confusing menu paths are laid out clearly, turning what would otherwise be a tangled sequence of clicks into a process you can actually follow. Formulas are shown in authentic CAS notation, exactly as they appear on your calculator. The algebra fundamentals cover equations and an introduction to term simplification. And whenever you're looking for something specific, the search function finds it instantly. Just as important is what CASify Lite doesn't ask of you: no account, no registration, no internet connection required. The app runs entirely offline, whether you're at home or on the go. There's no advertising, no tracking, and no data collection, and CASify Lite doesn't cost you anything either. Once you move into upper secondary school, the material grows, and CASify grows with you. CASify Pro unlocks all the topics that will carry you through to your final exams: Calculus, Statistics, and Geometry, along with every grade level from 11 through 13, plus dark mode.
Screenshots
Verdict
The clearest difference is iOS requirement: Turtle Robot at 6.0 against CASify Lite's 15.1. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Turtle Robot | CASify Lite |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | β |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 β better | 15.1 |
| Further details β not scored | ||
| Size | 36 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | bitReal, Inc. | Lennart Koch |
In-app purchases
Turtle Robot
No in-app purchases
CASify Lite
No in-app purchases





