# Golly vs Observer for Screeps

The clearest difference is iOS requirement: Golly at 13.0 against Observer for Screeps's 17.0. 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 | Golly | Observer for Screeps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (45 ratings)](https://appshunter.io/ios/app/golly/id553184760/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 96.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | — |
| Monetization | Free | — |
| Size | 14 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Andrew Trevorrow](https://appshunter.io/developer/553184763) | [Jacob Kelly](https://appshunter.io/developer/1026086454) |

## What reviewers say

### Golly

[App page](https://appshunter.io/ios/app/golly/id553184760)

Explore Conway's Game of Life and various cellular automata with this open-source application. It supports diverse universe types, multiple algorithms, and a wide array of cellular automata rules. Users can import patterns, download from online archives, and utilize unlimited undo/redo functionality.

**Highlights:** Supports bounded and unbounded universes, Multiple algorithms including hashlife, Variety of cellular automata types included, Reads multiple file formats (RLE, macrocell, etc.), Extracts patterns and rules from zip files, Downloads patterns and rules from online archives, Unlimited undo/redo

**Features:** macOS Compatibility

**In-app purchases:** none


### Observer for Screeps

[App page](https://appshunter.io/ios/app/observer-for-screeps/id1496710102)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Golly free?

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

### Is Observer for Screeps free?

Observer for Screeps is free to download, with no in-app purchases.

### Do Golly or Observer for Screeps have ads?

Neither Golly nor Observer for Screeps 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.*