# Lambda calculus vs Q

The clearest difference is in-app purchases: Lambda calculus at none against Q's 3. Lambda calculus also leads on iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Q sells 3 in-app purchases, starting at $4.99 per month. Lambda calculus asks for nothing beyond the download.

## The numbers

| Metric | Lambda calculus | Q |
| --- | --- | --- |
| 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 | No |
| Update frequency | — | Every 3 weeks |
| Monetization | Free | — |
| Size | 5 MB | 8 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [EUNMIN PARK](https://appshunter.io/developer/1549813078) |

## 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


### Q

[App page](https://appshunter.io/ios/app/q-alpha/id6760243993)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Q-Alpha Pro (Monthly) | $4.99 | per month |
| Q-Alpha Pro (Yearly) | $29.99 | per year |
| Q-Alpha Learner Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Lambda calculus free?

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

### Is Q free?

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

### Do Lambda calculus or Q have ads?

Neither Lambda calculus nor Q 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.*