# Lambda calculus vs Another Turing Machine

The clearest difference is price: Lambda calculus at Free against Another Turing Machine's $1.99. Lambda calculus also leads on iOS requirement (16.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.

Lambda calculus is free to download; Another Turing Machine costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Lambda calculus | Another Turing Machine |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/lambda-calculus/id6737766234/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Daily |
| Monetization | Free | — |
| Size | 5 MB | 1 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Stefan JOSTEN](https://appshunter.io/developer/949662361) |

## What reviewers say

### Lambda calculus

[App page](https://appshunter.io/ios/app/lambda-calculus/id6737766234)

Learn the fundamentals of lambda calculus with this educational application. Gain a basic understanding of this important mathematical concept through an introductory experience.

**Highlights:** Introduction to lambda calculus, Basic understanding of concepts, Educational content

**Features:** macOS Compatibility

**In-app purchases:** none


### Another Turing Machine

[App page](https://appshunter.io/ios/app/another-turing-machine/id6742148242)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lambda calculus free?

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

### Is Another Turing Machine free?

Another Turing Machine costs $1.99, with no in-app purchases.

### Do Lambda calculus or Another Turing Machine have ads?

Neither Lambda calculus nor Another Turing Machine shows ads.

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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.*