# Celestial Simulation vs Signal Ark

The clearest difference is price: Signal Ark at Free against Celestial Simulation's $3.99. Celestial Simulation's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Signal Ark is free to download; Celestial Simulation costs $3.99 up front. Signal Ark sells 1 in-app purchase, starting at $6.99 per month. Celestial Simulation asks for nothing beyond the download.

## The numbers

| Metric | Celestial Simulation | Signal Ark |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/signal-ark-seti-explorer/id6784939271/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | — | Freemium |
| Size | 88 MB | 54 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dung Le](https://appshunter.io/developer/1850828414) | [Jean Marc Moro](https://appshunter.io/developer/1896481117) |

## What reviewers say

### Celestial Simulation

[App page](https://appshunter.io/ios/app/celestial-simulation/id6756852871)

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

**In-app purchases:** none


### Signal Ark

[App page](https://appshunter.io/ios/app/signal-ark-seti-explorer/id6784939271)

Explore cosmic radio signals and learn about radio astronomy. Analyze signal packages, track anomalies, and build your own exploration archive. Discover the science behind searching the cosmos.

**Highlights:** Cosmic radio signal exploration, Signal package analysis, SETI-inspired lessons, Waterfall spectrograms, Cosmic journal for notes, Radio signal sonification

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $6.99 | per month |


## Frequently asked questions

### Is Celestial Simulation free?

Celestial Simulation costs $3.99, with no in-app purchases.

### Is Signal Ark free?

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

### Do Celestial Simulation or Signal Ark have ads?

Neither Celestial Simulation nor Signal Ark 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.*