# Logical Construct & Philosophy vs EGK Calculus AR

The clearest difference is price: Logical Construct & Philosophy at Free against EGK Calculus AR's $19.99. Logical Construct & Philosophy also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (16.4 vs 18.5). EGK Calculus AR's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Logical Construct & Philosophy is free to download; EGK Calculus AR costs $19.99 up front. Logical Construct & Philosophy sells 2 in-app purchases, starting at $3.99 per month. EGK Calculus AR asks for nothing beyond the download.

Logical Construct & Philosophy ships an update every 2 weeks, EGK Calculus AR every 2 months. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Logical Construct & Philosophy | EGK Calculus AR |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/logical-construct-and-philosophy/id6744826340/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 1 MB |
| Requires iOS | **16.4** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lucainson Raymond](https://appshunter.io/developer/1805397683) | [Isaac Eng Gian Khor](https://appshunter.io/developer/1808933315) |

## What reviewers say

### Logical Construct & Philosophy

[App page](https://appshunter.io/ios/app/logical-construct-and-philosophy/id6744826340)

Engage with formal logic through interactive puzzles. Apply inference rules to construct valid proofs, making abstract reasoning concrete and intuitive. Explore propositional and modal logic, with classic philosophical arguments integrated into the learning process.

**Highlights:** Interactive proof construction, 24 inference rules, Propositional and modal logic, Classic philosophical arguments, Step-by-step solution viewer, Progress tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Annual Plan | $19.99 | per year |


### EGK Calculus AR

[App page](https://appshunter.io/ios/app/egk-calculus-ar/id6748884900)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Logical Construct & Philosophy free?

Logical Construct & Philosophy is free to download, with in-app purchases available.

### Is EGK Calculus AR free?

EGK Calculus AR costs $19.99, with no in-app purchases.

### Do Logical Construct & Philosophy or EGK Calculus AR have ads?

Neither Logical Construct & Philosophy nor EGK Calculus AR shows ads.

### Which is updated more often, Logical Construct & Philosophy or EGK Calculus AR?

Logical Construct & Philosophy ships an update every 2 weeks, and EGK Calculus AR every 2 months. Most recently, Logical Construct & Philosophy was updated on September 14, 2026 and EGK Calculus AR on September 17, 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.*