# Lambda calculus vs SwipeDrill

The clearest difference is in-app purchases: Lambda calculus at none against SwipeDrill's 1. Lambda calculus also leads on ads (none vs shown). SwipeDrill's advantage is iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. SwipeDrill sells 1 one-off in-app purchase. Lambda calculus asks for nothing beyond the download.

## The numbers

| Metric | Lambda calculus | SwipeDrill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/lambda-calculus/id6737766234/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Monetization | Free | — |
| Size | 5 MB | 30 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [kenji kuroki](https://appshunter.io/developer/1834943683) |

## 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


### SwipeDrill

[App page](https://appshunter.io/ios/app/swipedrill-git/id6777544084)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium | $3.99 | one-time |


## Frequently asked questions

### Is Lambda calculus free?

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

### Is SwipeDrill free?

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

### Do Lambda calculus or SwipeDrill have ads?

SwipeDrill shows ads; Lambda calculus does not.

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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.*