# Godel numbering vs Predicate Logic Foundations

The clearest difference is iOS requirement: Predicate Logic Foundations at 15.1 against Godel numbering's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Godel numbering | Predicate Logic Foundations |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 5 MB | 38 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### Godel numbering

[App page](https://appshunter.io/ios/app/godel-numbering/id6738349342)

**Features:** macOS Compatibility

**In-app purchases:** none


### Predicate Logic Foundations

[App page](https://appshunter.io/ios/app/predicate-logic-foundations/id6773451459)

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

**In-app purchases:** none


## Frequently asked questions

### Is Godel numbering free?

Godel numbering is free to download, with no in-app purchases.

### Is Predicate Logic Foundations free?

Predicate Logic Foundations is free to download, with no in-app purchases.

### Do Godel numbering or Predicate Logic Foundations have ads?

Neither Godel numbering nor Predicate Logic Foundations 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.*