# Karnaugh & Boolean Minimizer vs Birdathon

The clearest difference is price: Birdathon at Free against Karnaugh & Boolean Minimizer's $5.99. Birdathon also leads on rating (4.7 vs 4.2) and review sentiment (100% vs 71%). Karnaugh & Boolean Minimizer's advantage is in-app purchases (none vs 4) and update cadence (monthly vs every 4 months). On ratings volume, ads and device support there is nothing between them.

Birdathon is free to download; Karnaugh & Boolean Minimizer costs $5.99 up front. Birdathon sells 4 one-off in-app purchases. Karnaugh & Boolean Minimizer asks for nothing beyond the download.

Birdathon holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 22 and 15 respectively. Written reviews point the same way: 71% of Karnaugh & Boolean Minimizer's written reviews are positive against 100% of Birdathon's.

Karnaugh & Boolean Minimizer ships an update monthly, Birdathon every 4 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Karnaugh & Boolean Minimizer | Birdathon |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.2 (22 ratings)](https://appshunter.io/ios/app/karnaugh-and-boolean-minimizer/id729313165/reviews) | **[4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews)** |
| Number of ratings | **22** | 15 |
| Positive reviews | 70.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Paid | **Free** |
| Size | 6 MB | 192 MB |
| Requires iOS | **11.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ketan Appa](https://appshunter.io/developer/576435759) | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) |

## What reviewers say

### Karnaugh & Boolean Minimizer

[App page](https://appshunter.io/ios/app/karnaugh-and-boolean-minimizer/id729313165)

Simplify complex Boolean expressions and Karnaugh maps with step-by-step solutions. This tool supports up to 26 variables and offers multiple minimization algorithms for digital logic design.

**Highlights:** Minimize Karnaugh Maps up to 8 variables, Step-by-step Boolean expression simplification, Quine–McCluskey algorithm for functions up to 8 variables, Multi-Output minimization with Espresso algorithm, View minimized solutions in SOP/POS forms, Generate circuits from minimized solutions

**Features:** Vision Pro support

**In-app purchases:** none


### Birdathon

[App page](https://appshunter.io/ios/app/birdathon/id1211977440)

This app helps birdwatchers create and organize detailed checklists of their observations. It automatically records time and location, allowing for easy editing and customization. Users can visualize their sightings on maps, add field notes, and export data for sharing or further analysis.

**Highlights:** Observation-centric checklists, Automatic time and location recording, Customizable maps with boundary overlays, Field notes for additional observations, Multiple checklist sorting options, Data export to CSV and other formats, Create checklist templates

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Good Tip | $0.99 | one-time |
| Great Tip | $1.99 | one-time |
| Amazing Tip | $2.99 | one-time |
| Incredible Tip | $4.99 | one-time |


## Frequently asked questions

### Is Karnaugh & Boolean Minimizer free?

Karnaugh & Boolean Minimizer costs $5.99, with no in-app purchases.

### Is Birdathon free?

Birdathon is free to download, with in-app purchases available.

### Which has better reviews, Karnaugh & Boolean Minimizer or Birdathon?

Birdathon is rated higher. Karnaugh & Boolean Minimizer averages 4.2 out of 5 from 22 ratings, while Birdathon averages 4.7 from 15 ratings.

### Do Karnaugh & Boolean Minimizer or Birdathon have ads?

Neither Karnaugh & Boolean Minimizer nor Birdathon shows ads.

### Which is updated more often, Karnaugh & Boolean Minimizer or Birdathon?

Karnaugh & Boolean Minimizer ships an update monthly, and Birdathon every 4 months. Most recently, Karnaugh & Boolean Minimizer was updated on September 9, 2026 and Birdathon on September 19, 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.*