# Godel numbering vs Control Systems Engineering

The clearest difference is in-app purchases: Godel numbering at none against Control Systems Engineering's 6. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Control Systems Engineering sells 6 in-app purchases, starting at $9.99 per month. Godel numbering asks for nothing beyond the download.

## The numbers

| Metric | Godel numbering | Control Systems Engineering |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 5 MB | 18 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### Godel numbering

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Control Systems Engineering

[App page](https://appshunter.io/ios/app/control-systems-engineering/id6739731886)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is Godel numbering free?

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

### Is Control Systems Engineering free?

Control Systems Engineering is free to download, with in-app purchases available.

### Do Godel numbering or Control Systems Engineering have ads?

Neither Godel numbering nor Control Systems Engineering 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.*