Side by side
Castiel vs GeoGebra
Both stand on scientific calculator apps. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidLinuxWindows
Visit Castiel Free plan AndroidAPIiPhone+4
Choose GeoGebra for a broad set of mathematics tools, classroom resources, and teacher progress features across web, desktop, and mobile. Its free plan is for non-commercial use, so commercial users need a separate license.
Visit GeoGebraThe facts
| Castiel | GeoGebra | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, Linux, Windows | Android, API, iPhone, Linux, Mac, Web, Windows |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 1 |
| Maker | Not published | GeoGebra |
| Website | castiel.dmkilab.com | geogebra.org |
| On scientific calculator apps | #6 of 32 | #2 of 32 |
Castiel: what it does well
GeoGebra: what it does well
- Combines geometry, algebra, graphing, statistics, and calculus tools.
- Main mathematics tools work offline after app installation.
- Includes more than 1 million free classroom resources.
- Classroom supports live progress monitoring and teacher feedback.
- Apps are available across web, desktop, and mobile platforms.
What to know first
- Commercial use requires a separate license.
- Online saving, sharing, and cross-device access require an account.
- Online resources and account features need an internet connection.
Alternatives to Castiel Alternatives to GeoGebra The whole list