Kmap vs GeoGebra 3D Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kmap
Simplify Boolean expressions and create Karnaugh maps for up to six variables. Offers both Sum of Products and Product of Sums, with support for 'don't-care' conditions and step-by-step solution viewing. Ideal for students and engineers in digital logic and computer engineering.
- Karnaugh map creation (2-6 variables)
- Automatic Boolean minimization
- Sum of Products (SOP) and Product of Sums (POS)
- Don't-care (X) support
- Truth table input
- Color-coded grouping overlays
- Step-by-step solution view
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Kmap helps students and engineers simplify Boolean expressions quickly and clearly. Create and solve 2 to 6 variable Karnaugh maps with automatic minimization and a clean, fast interface. Features: Sum of Products (SOP) and Product of Sums (POS) Don't-care (X) support Direct K-map input Truth table input Color-coded grouping overlays Step-by-step solution view Light and dark appearance Ideal for digital logic, computer engineering, and Boolean algebra coursework.
GeoGebra 3D Calculator
This application allows users to solve 3D math problems, graph functions and surfaces, and create geometric constructions in 3D. It features augmented reality to place math objects in the real world and offers access to free learning activities.
- 3D function and surface plotting
- Create 3D geometric objects
- Augmented Reality integration
- Interactive sliders and graphs
- Access to learning activities
- Save and share constructions
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Easily solve 3D math problems, graph 3D functions and surfaces, create geometric constructions in 3D, save and share your results. With Augmented Reality enabled, you can place math objects on any surface and walk around them! Millions of people around the world use GeoGebra to learn mathematics and science. Join us: Dynamic Mathematics for everyone! • Plot f(x,y) functions and parametric surfaces • Create solids, spheres, planes and many more 3D objects • Get intersection points and cross-sections • Experience sliders, points, graphs and geometry all working together • Search for free learning activities directly from our app • Save and share your results with friends and teachers We’d love to hear from you: send us your questions or feedback via Twitter @geogebra or via https://help.geogebra.org
Screenshots
Verdict
The clearest difference is rating: Kmap at 5.0 against GeoGebra 3D Calculator's 4.0. Kmap also leads on review sentiment (100% vs 66%). GeoGebra 3D Calculator's advantage is update cadence (monthly vs every 128 months) and ratings volume (52 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Kmap holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: GeoGebra 3D Calculator has 52 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Kmap's written reviews are positive against 66% of GeoGebra 3D Calculator's.
Kmap ships an update every 128 months, GeoGebra 3D Calculator monthly. Both last shipped on October 24, 2026.
| Parameter | Kmap | GeoGebra 3D Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.0 (52 ratings) |
| Positive reviews | 100.0% of reviews — better | 65.8% of reviews |
| Number of ratings | 5 | 52 — better |
| Update frequency | Every 128 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 30 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Michalka | GeoGebra GmbH |
Customer experience
Kmap
GeoGebra 3D Calculator
In-app purchases
Kmap
No in-app purchases
GeoGebra 3D Calculator
No in-app purchases
Questions
Is Kmap free?
Is GeoGebra 3D Calculator free?
Which has better reviews, Kmap or GeoGebra 3D Calculator?
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