# Kmap vs Voltius

The clearest difference is update cadence: Voltius at every 3 weeks against Kmap's every 128 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kmap ships an update every 128 months, Voltius every 3 weeks. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Kmap | Voltius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/kmap/id1033942468/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 128 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 20 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Michalka](https://appshunter.io/developer/1033942467) | [Caio Pinheiro](https://appshunter.io/developer/494446833) |

## What reviewers say

### Kmap

[App page](https://appshunter.io/ios/app/kmap/id1033942468)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Voltius

[App page](https://appshunter.io/ios/app/voltius/id6764050596)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kmap free?

Kmap is free to download, with no in-app purchases.

### Is Voltius free?

Voltius is free to download, with no in-app purchases.

### Do Kmap or Voltius have ads?

Neither Kmap nor Voltius shows ads.

### Which is updated more often, Kmap or Voltius?

Kmap ships an update every 128 months, and Voltius every 3 weeks. Most recently, Kmap was updated on October 4, 2026 and Voltius on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*