# The Logic Calculator vs EMF Radiation Detector Reader

The Logic Calculator and EMF Radiation Detector Reader both sit at 4.6 stars, but that hides the real split: 100% of The Logic Calculator's written reviews are positive against 54% of EMF Radiation Detector Reader's. The Logic Calculator also leads on in-app purchases (none vs 2) and ads (none vs shown). EMF Radiation Detector Reader's advantage is ratings volume (5K vs 9). On price, rating and device support there is nothing between them.

Both are free to download. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. The Logic Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for The Logic Calculator against 4.5 for EMF Radiation Detector Reader. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 5K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 100% of The Logic Calculator's written reviews are positive against 54% of EMF Radiation Detector Reader's.

The Logic Calculator ships an update every 5 weeks, EMF Radiation Detector Reader every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | The Logic Calculator | EMF Radiation Detector Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/the-logic-calculator/id1484264087/reviews)** | [4.5 (5K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews) |
| Number of ratings | 9 | **5K** |
| Positive reviews | **100.0% of reviews** | 53.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 20 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ioannis Votsis](https://appshunter.io/developer/1484264086) | [Rounding Squares BV](https://appshunter.io/developer/976539506) |

## What reviewers say

### The Logic Calculator

[App page](https://appshunter.io/ios/app/the-logic-calculator/id1484264087)

This free utility app helps users perform propositional logic operations with ease. It provides detailed feedback on input well-formedness, sentence types, set consistency, and argument validity. Users can also generate and copy truth tables to other applications.

**Highlights:** Propositional logic operations, Input well-formedness checking, Tautology, contradiction, and contingency determination, Set consistency checking, Argument validity checking, Truth table generation, Copyable truth tables

**Features:** macOS Compatibility

**In-app purchases:** none


### EMF Radiation Detector Reader

[App page](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734)

Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.

**Highlights:** Detect EMF radiation, Measure EMF levels, Identify risk zones, Organize living space, Measure appliance emissions, No expensive equipment needed

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EMF Radiation Detector Premium Week | $1.99 | per 7 days |
| EMF Radiation Detector Premium Year | $9.99 | per year |

**What reviewers like**

- 👍 Works well around microwave
- 👍 Consistent results
- 👍 Useful tool for detecting EMF
- 👍 Legit EMF detection
- 👍 Helps find problem areas

**What reviewers complain about**

- 🐛 Ads cover reading numbers
- 🔍 Unclear how to interpret readings
- ⚠️ Questionable accuracy, only detects magnets
- 🔍 No explanation of safe/unsafe levels
- 🐛 Doesn't detect radio frequencies

**Reported bugs**

- Readings inconsistent or inaccurate
- Doesn't work as expected, only detects magnets

**Requested features**

- Add sound or vibration alerts for high EMF
- Provide more information on EMF levels and safety
- Improve layout to avoid ads covering readings


## Frequently asked questions

### Is The Logic Calculator free?

The Logic Calculator is free to download, with no in-app purchases.

### Is EMF Radiation Detector Reader free?

EMF Radiation Detector Reader is free to download, with in-app purchases available.

### Which has better reviews, The Logic Calculator or EMF Radiation Detector Reader?

The Logic Calculator is rated higher. The Logic Calculator averages 4.6 out of 5 from 9 ratings, while EMF Radiation Detector Reader averages 4.5 from 5K ratings.

### Do The Logic Calculator or EMF Radiation Detector Reader have ads?

EMF Radiation Detector Reader shows ads; The Logic Calculator does not.

### Which is updated more often, The Logic Calculator or EMF Radiation Detector Reader?

The Logic Calculator ships an update every 5 weeks, and EMF Radiation Detector Reader every 6 months. Most recently, The Logic Calculator was updated on October 24, 2026 and EMF Radiation Detector Reader on October 24, 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.*