# Slope Calculator Plus vs Lambda calculus

The clearest difference is price: Lambda calculus at Free against Slope Calculator Plus's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Lambda calculus is free to download; Slope Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Slope Calculator Plus | Lambda calculus |
| --- | --- | --- |
| Price | $2.99 | **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 | No |
| Ads | No | No |
| Update frequency | Every 23 months | — |
| Monetization | — | Free |
| Size | 1 MB | 5 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Slope Calculator Plus

[App page](https://appshunter.io/ios/app/slope-calculator-plus/id1627653061)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Slope Calculator Plus free?

Slope Calculator Plus costs $2.99, with no in-app purchases.

### Is Lambda calculus free?

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

### Do Slope Calculator Plus or Lambda calculus have ads?

Neither Slope Calculator Plus nor Lambda calculus 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.*