# Isotope Browser vs Kmap Solver

The clearest difference is price: Isotope Browser at Free against Kmap Solver's $3.99. Isotope Browser also leads on rating (4.8 vs 3.4) and update cadence (every 6 weeks vs every 9 months). On ads, in-app purchases and device support there is nothing between them.

Isotope Browser is free to download; Kmap Solver costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Isotope Browser holds the better App Store score, 4.8 against 3.4. Both are backed by a comparable volume of ratings — 27 and 8 respectively. Written reviews point the same way: 83% of Isotope Browser's written reviews are positive against 67% of Kmap Solver's.

Isotope Browser ships an update every 6 weeks, Kmap Solver every 9 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Isotope Browser | Kmap Solver |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** | [3.4 (8 ratings)](https://appshunter.io/ios/app/kmap-solver/id1504593834/reviews) |
| Number of ratings | **27** | 8 |
| Positive reviews | **82.6% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | **Free** | Paid |
| Size | 8 MB | 7 MB |
| Requires iOS | **11.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IAEA](https://appshunter.io/developer/535500126) | [Adriano Moutinho](https://appshunter.io/developer/1502320573) |

## What reviewers say

### Isotope Browser

[App page](https://appshunter.io/ios/app/isotope-browser/id943890538)

Access comprehensive nuclear data for over 4,000 nuclides and isomers. Explore interactive charts, filter by various criteria, and view detailed information for each nuclide. Data is sourced from reliable resources and available offline.

**Highlights:** Properties of over 4,000 nuclides and isomers, Interactive Chart of Nuclides, Periodic Table of Elements, Filter by half-life, decay mode, radiation type, and energy, Detailed nuclide information with web links, Offline access to embedded database

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

**In-app purchases:** none


### Kmap Solver

[App page](https://appshunter.io/ios/app/kmap-solver/id1504593834)

This app solves Karnaugh Maps (Kmaps) for up to five variables, providing all possible solutions and displaying them on the map. It also generates four optimized output logic circuit versions, including traditional, common inverters, and NAND/NOR only circuits.

**Highlights:** Solves Kmaps for 2, 3, 4, or 5 variables, Displays all possible Kmap solutions, Shows four optimized logic circuit versions, Traditional circuit output, Common inverters circuit output, NAND/NOR only circuit output

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

**In-app purchases:** none


## Frequently asked questions

### Is Isotope Browser free?

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

### Is Kmap Solver free?

Kmap Solver costs $3.99, with no in-app purchases.

### Which has better reviews, Isotope Browser or Kmap Solver?

Isotope Browser is rated higher. Isotope Browser averages 4.8 out of 5 from 27 ratings, while Kmap Solver averages 3.4 from 8 ratings.

### Do Isotope Browser or Kmap Solver have ads?

Neither Isotope Browser nor Kmap Solver shows ads.

### Which is updated more often, Isotope Browser or Kmap Solver?

Isotope Browser ships an update every 6 weeks, and Kmap Solver every 9 months. Most recently, Isotope Browser was updated on October 24, 2026 and Kmap Solver on October 29, 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.*